2024-03-28T10:35:57Zhttps://vtechworks.lib.vt.edu/server/oai/requestoai:vtechworks.lib.vt.edu:10919/731612024-03-12T15:59:53Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Phase transitions: renormalization and scaling
Encyclopedia of Applied Physics
Schwabl, Franz
Täuber, Uwe C.
Trigg, GL
Physics
2016-10-04T17:26:24Z
2016-10-04T17:26:24Z
1995
Article
http://hdl.handle.net/10919/73161
13
http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527404783.html
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
343 - 371 page(s)
application/pdf
VCH
oai:vtechworks.lib.vt.edu:10919/259182023-06-21T19:15:16Zcom_10919_18738com_10919_5539com_10919_24211com_10919_5553col_10919_23145col_10919_24287
High quality factor silica microspheres functionalized with self-assembled nanomaterials
Optics Express
Kandas, Ishac L. N.
Zhang, Baigang
Daengngam, Chalongrat
Ashry, Islam
Jao, Chih-Yu
Peng, Bo
Ozdemir, Sahin K.
Robinson, Hans D.
Heflin, James R.
Yang, Lan
Xu, Yong
Electrical and Computer Engineering
Physics
Virginia Tech
Whispering-gallery modes
Optical microcavities
Surfaces
Microresonators
Resonators
Adsorption
Scattering
Molecules
With extremely low material absorption and exceptional surface smoothness, silica-based optical resonators can achieve extremely high cavity quality (Q) factors. However, the intrinsic material limitations of silica (e. g., lack of second order nonlinearity) may limit the potential applications of silica-based high Q resonators. Here we report some results in utilizing layer-by-layer self-assembly to functionalize silica microspheres with nonlinear and plasmonic nanomaterials while maintaining Q factors as high as 10(7). We compare experimentally measured Q factors with theoretical estimates, and find good agreement. (C) 2013 Optical Society of America
National Institute of Occupational Safety and Health 1U60OH009761-01
VT-MENA program
U.S. Army Research Office W911NF-12-1-0026
2014-03-14T15:08:14Z
2014-03-14T15:08:14Z
2013-09-01
2014-02-06
Article - Refereed
Text
Ishac Kandas, Baigang Zhang, Chalongrat Daengngam, Islam Ashry, Chih-Yu Jao, Bo Peng, Sahin K. Ozdemir, Hans D. Robinson, James R. Heflin, Lan Yang, and Yong Xu, "High quality factor silica microspheres functionalized with self-assembled nanomaterials," Opt. Express 21, 20601-20610 (2013); doi: 10.1364/oe.21.020601
1094-4087
http://hdl.handle.net/10919/25918
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-18-20601
https://doi.org/10.1364/oe.21.020601
en
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
application/pdf
Optical Society of America
oai:vtechworks.lib.vt.edu:10919/523812020-10-29T05:01:49Zcom_10919_24211com_10919_5553col_10919_24287
Resistivity and galvanomagnetic coefficients of iron group metallic glasses with chromium substitutions
Journal of Applied Physics
Long, Jerome R.
Hadjipanayis, George C.
Sellmyer, David J.
Physics
Kollmorgen Corporation. Industrial Drives Division
University of Nebraska-Lincoln
Electrical resistivity
Glasses
Amorphous metals
Nickel
Chromium
Magnetic field and temperature dependences of the electrical resistivities and Hall resistivities were measured for the metallic glass ferromagnets Fe13Ni60Cr5Si10B12, Fe37Ni36Cr5Si10B12, Fe81B13.5Si3.5C2, and Fe5Co75Si15B5. Resistance minima and magnetoresistivity of the FeNiCr glasses have been found to be consistent with a modified Kondo model of low temperature scattering. The Hall resistivities are positive and large. The spontaneous Hall coefficients of the FeNiCr glasses are in good agreement with previous magnetization measurements on the same glasses.
2015-05-21T15:46:24Z
2015-05-21T15:46:24Z
1982
2015-04-24
Article - Refereed
Text
Long, J. R., Hadjipanayis, G. C., Sellmyer, D. J. (1982). Resistivity and galvanomagnetic coefficients of iron group metallic glasses with chromium substitutions. Journal of Applied Physics, 53(11), 8240-8242. doi: 10.1063/1.330338
0021-8979
http://hdl.handle.net/10919/52381
http://scitation.aip.org/content/aip/journal/jap/53/11/10.1063/1.330338
https://doi.org/10.1063/1.330338
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
4 pages
application/pdf
application/pdf
American Institute of Physics
oai:vtechworks.lib.vt.edu:10919/730972024-03-13T14:10:09Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Non-equilibrium behavior at a liquid-gas critical point
European Physical Journal B
Santos, J. E.
Täuber, Uwe C.
Physics
Physics, Condensed Matter
Physics
DEPENDENT SHEAR VISCOSITY
RENORMALIZATION-GROUP CALCULATIONS
ELASTIC PHASE-TRANSITIONS
DRIVEN DIFFUSIVE SYSTEM
MODE-COUPLING TERMS
SOUND-ATTENUATION
O(N)-SYMMETRICAL SYSTEMS
FIELD-THEORY
VELOCITY
2-TEMPERATURE
Published version
2016-09-30T00:31:34Z
2016-09-30T00:31:34Z
2002-08-01
Article - Refereed
1434-6028
http://hdl.handle.net/10919/73097
https://doi.org/10.1140/epjb/e2002-00246-2
28
4
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000178006900006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
423 - 440 (18) page(s)
application/pdf
Springer-Verlag
oai:vtechworks.lib.vt.edu:10919/478292020-10-29T05:01:49Zcom_10919_24211com_10919_5553col_10919_24287
Dynamic nuclear polarization with an inhomogeneously broadened ESR line. I. Theory
Physical Review B
Wollan, D. S.
Physics
Virginia Tech
physics, condensed matter
Theoretical investigations of the dynamic nuclear polarization (DNP) and the nuclear spin-lattice relaxation time Tn in diamagnetic dielectric crystals diluted with electron paramagnetic impurities are reported here. The steady-state DNP enhancement Ess and the DNP pump time τDNP are calculated for the solid effect (SE), the cross effect (CE), and DNP by the electron dipole-dipole reservoir (EDDR), assuming (i) a predominantly inhomogeneously broadened (IHB) ESR line with uniform spin-packet widths (for SE and CE, but not EDDR DNP), (ii) rapid nuclear spin diffusion, (iii) the electron and nuclear high-temperature limit, (iv) no phonon bottleneck, and (v) isotropic electron impurities or axially symmetric electrons whose symmetry axis (c axis) is aligned parallel to the applied magnetic field H⃗ 0 DNP results for IHB SE, which include DNP leakage factors, predict Ess comparable to the ideal enhancement in favorable cases, with Ess vs H0 curves not proportional to the ESR line-shape derivative at high microwave powers, contrary to early theories of IHB SE. The effects of electron jumps between spin packets are discussed. DNP and Tn are calculated for the cross effect for both the well-resolved and unresolved limits. We get larger SE DNP and smaller CE DNP for the unresolved CE than do Hwang and Hill, and consider CE DNP leakage factors they omitted. The inequality Tn2≤τDNP≤Tn is found for the well-resolved CE, while τDNP≈Tn is estimated for the unresolved CE, different from the general SE case where τDNP≪Tn often occurs. DNP by EDDR is extended from the pure homogeneously broadened (HB) ESR limit to the IHB case with fast spectral diffusion, as suggested by Abragam and Borghini, and is further extended from electronic isotropy to axially symmetric electrons with the c axis parallel to H⃗ 0 Various limits of Ess and τDNP are compared and contrasted for SE, CE, and EDDR DNP, to enable experimenters to differentiate these three DNP mechanisms, if possible. We propose a three-spectral-region model for wide ESR lines, which may exhibit IHB behavior in the wings of the line, HB EDDR effects near the ESR absoption peak, and CE effects in between.
2014-05-07T15:36:54Z
2014-05-07T15:36:54Z
1976-05
2014-04-23
Article - Refereed
Wollan, D. S., "Dynamic nuclear polarization with an inhomogeneously broadened ESR line. I. Theory," Phys. Rev. B 13, 3671 DOI: http://dx.doi.org/10.1103/PhysRevB.13.3671
0163-1829
http://hdl.handle.net/10919/47829
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.13.3671
https://doi.org/10.1103/PhysRevB.13.3671
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/473672020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Can we make the SiC-SiO2 interface as good as the Si-SiO2 interface?
Applied Physics Letters
Di Ventra, M.
Physics
Virginia Tech
oxide-semiconductor capacitors
thin-film oxidation
silicon-carbide
band-edges
precipitation
polytype
A simple analysis based on the bulk valence and conduction densities of states was employed to estimate the interface-state densities for interfaces between the three most common SiC polytypes (3C, 4H, and 6H) and SiO2. We found that all polytypes had comparable conduction-band interface-state density with silicon dioxide as Si, being higher for the valence band. The conduction-band interface-state density should be higher for 4H-SiC than for 6H-SiC for both the C- or Si-terminated interfaces. On the contrary, the valence-band interface-state density can be either higher or lower for 4H-SiC compared to 6H-SiC according to which atom, C or Si, terminates the interface. The trends suggested by the above model are in agreement with recent mobility measurements in SiC-based field-effect transistors. (C) 2001 American Institute of Physics.
2014-04-16T14:16:39Z
2014-04-16T14:16:39Z
2001-10
2014-03-27
Article - Refereed
Di Ventra, M., "Can we make the SiC-SiO2 interface as good as the Si-SiO2 interface?," Appl. Phys. Lett. 79, 2402 (2001); http://dx.doi.org/10.1063/1.1399009
0003-6951
http://hdl.handle.net/10919/47367
http://scitation.aip.org/content/aip/journal/apl/79/15/10.1063/1.1399009
https://doi.org/10.1063/1.1399009
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
AIP Publishing
oai:vtechworks.lib.vt.edu:10919/816552024-03-13T14:09:17Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Measurement of inclusive neutral current pi(0) production on carbon in a few-GeV neutrino beam
Physical Review D
Kurimoto, Y.
Alcaraz-Aunion, J. L.
Brice, S. J.
Bugel, L.
Catala-Perez, J.
Cheng, G.
Conrad, Janet M.
Djurcic, Zelimir
Dore, U.
Finley, D. A.
Franke, A. J.
Giganti, C.
Gomez-Cadenas, J. J.
Guzowski, P.
Hanson, A.
Hayato, Y.
Hiraide, K.
Jover-Manas, G.
Karagiorgi, Georgia S.
Katori, T.
Kobayashi, K.
Kobilarcik, T.
Kubo, H.
Louis, W. C.
Loverre, P. F.
Ludovici, L.
Mahn, K. B. M.
Mariani, Camillo
Masuike, S.
Matsuoka, K.
McGary, V. T.
Metcalf, W.
Mills, G. B.
Mitsuka, G.
Miyachi, Y.
Mizugashira, S.
Moore, C. D.
Nakajima, Y.
Nakaya, T.
Napora, R.
Nienaber, P.
Orme, D.
Otani, M.
Russell, A. D.
Sanchez, F.
Shaevitz, Marjorie Hansen
Shibata, T. A.
Sorel, M.
Stefanski, R. J.
Takei, H.
Tanaka, H. K.
Tanaka, M.
Tayloe, R.
Taylor, I. J.
Tesarek, R. J.
Uchida, Y.
Van de Water, R. G.
Walding, J. J.
Wascko, M. O.
White, H. B.
Wilking, M. J.
Yokoyama, M.
Zeller, Geralyn P.
Zimmerman, E. D.
Physics
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
SINGLE-PION-PRODUCTION
K2K SCIBAR DETECTOR
SIMULATION
SCIBOONE
SEARCH
The SciBooNE Collaboration reports inclusive neutral current neutral pion production by a muon
neutrino beam on a polystyrene target (C8H8). We obtain (7.7 ± 0.5(stat.) ± 0.5(sys.)) x 10⁻²as
the ratio of the neutral current neutral pion production to total charged current cross section; the
mean energy of neutrinos producing detected neutral pions is 1.1 GeV. The result agrees with the
Rein-Sehgal model implemented in our neutrino interaction simulation program with nuclear effects.
The spectrum shape of the π⁰ momentum and angle agree with the model. We also measure the
ratio of the neutral current coherent pion production to total charged current cross section to be
(0.7 ± 0.4) x 10⁻².
Published version
2018-01-10T01:39:07Z
2018-01-10T01:39:07Z
2010-02-01
Article - Refereed
1550-7998
http://hdl.handle.net/10919/81655
https://doi.org/10.1103/PhysRevD.81.033004
81
3
Mariani, C [0000-0003-3284-4681]
1550-2368
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000275069000015&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
? - ? (18) page(s)
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/750722024-03-13T14:09:33Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Thermometry for Laughlin States of Ultracold Atoms
Raum, P. T.
Scarola, Vito W.
Physics
2017-02-20T19:36:29Z
2017-02-20T19:36:29Z
2016
Article
http://hdl.handle.net/10919/75072
Scarola, VW [0000-0002-8653-2723]
en
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
oai:vtechworks.lib.vt.edu:10919/470902022-01-05T19:31:01Zcom_10919_24211com_10919_5553col_10919_24287
The half-Hartley and the half-Hilbert transform
Journal of Mathematical Physics
Paverifontana, S. L.
Zweifel, Paul F.
Physics
Virginia Tech
hilbert transforms
Inversion formulas are obtained for the restrictions of the Hartley and Hilbert transforms to R+. Regularity results are derived, and an illustrative example presented.
MURST
CNR
2014-04-09T18:12:28Z
2014-04-09T18:12:28Z
1994-05
2014-03-20
Article - Refereed
Paverifontana, S. L.; Zweifel, P. F., "The half-Hartley and the half-Hilbert transform," J. Math. Phys. 35, 2648 (1994); http://dx.doi.org/10.1063/1.530529
0022-2488
http://hdl.handle.net/10919/47090
http://scitation.aip.org/content/aip/journal/jmp/35/5/10.1063/1.530529
https://doi.org/10.1063/1.530529
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
AIP Publishing
oai:vtechworks.lib.vt.edu:10919/732492024-03-12T15:59:56Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Is Quantum Gravity a Super-Quantum Theory?
International Journal of Modern Physics D
Chang, Lay Nam
Lewis, Zachary
Minic, Djordje
Takeuchi, Tatsu
Physics
Astronomy & Astrophysics
Quantum gravity
Bell's inequalities
super-quantum correlations
HIDDEN-VARIABLE THEORIES
BELL INEQUALITIES
LOCAL THEORIES
TIME
We argue that quantum gravity should be a super-quantum theory, that is, a theory whose non-local correlations are stronger than those of canonical quantum theory. As a super-quantum theory, quantum gravity should display distinct experimentally observable super-correlations of entangled stringy states.
Published version
2016-10-18T23:41:42Z
2016-10-18T23:41:42Z
2013-10-01
Article - Refereed
0218-2718
http://hdl.handle.net/10919/73249
https://doi.org/10.1142/S021827181342025X
22
12
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000329048900032&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
? - ? (6) page(s)
application/pdf
World Scientific
oai:vtechworks.lib.vt.edu:10919/255352020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
10 kpc Scale Seyfert Galaxy Outflow: HST/COS Observations of IRAS F22456-5125
Astrophysical Journal
Borguet, Benoit C. J.
Edmonds, Douglas
Arav, Nahum
Dunn, Jay
Kriss, Gerard A.
Physics
Virginia Tech
galaxies: active
line: formation
quasars: absorption lines
quasars:
individual (iras f22456-5125)
ultraviolet-spectroscopic-explorer
active galactic nuclei
intrinsic
absorption
column densities
metal abundances
quasar feedback
winds
luminosity
absorbers
campaign
We present analysis of the UV spectrum of the low-z AGN IRAS F22456-5125 obtained with the Cosmic Origins Spectrograph on board the Hubble Space Telescope. The spectrum reveals six main kinematic components, spanning a range of velocities of up to 800 km s (1), which for the first time are observed in troughs associated with C II, C IV, N V, Si II, Si III, Si IV, and S IV. We also obtain data on the O VI troughs, which we compare to those available from an earlier Far Ultraviolet Spectroscopic Explorer epoch. Column densities measured from these ions allow us to derive a well-constrained photoionization solution for each outflow component. Two of these kinematic components show troughs associated with transitions from excited states of Si II and C II. The number density inferred from these troughs, in combination with the deduced ionization parameter, allows us to determine the distance to these outflow components from the central source. We find these components to be at a distance of similar to 10 kpc. The distances and the number densities derived are consistent with the outflow being part of a galactic wind.
NASA STScI GO 11686, GO 12022
NSF AST 0837880
2014-02-25T13:57:02Z
2014-02-25T13:57:02Z
2012-06
2014-02-05
Article - Refereed
Benoit C. J. Borguet et al. 2012. "10 kpc Scale Seyfert Galaxy Outflow: HST/COS Observations of IRAS F22456-5125," ApJ 751 107 doi:10.1088/0004-637X/751/2/107
0004-637X
http://hdl.handle.net/10919/25535
http://iopscience.iop.org/0004-637X/751/2/107/pdf/0004-637X_751_2_107.pdf
https://doi.org/10.1088/0004-637x/751/2/107
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
IOP Publishing Ltd.
oai:vtechworks.lib.vt.edu:10919/1015612020-12-22T08:12:57Zcom_10919_24464com_10919_24211com_10919_5553col_10919_24465col_10919_24287
Bounds on cosmic ray-boosted dark matter in simplified models and its corresponding neutrino-floor
Physical Review D
Dent, James B.
Dutta, Bhaskar
Newstead, Jayden L.
Shoemaker, Ian M.
We study direct detection bounds on cosmic ray-upscattered dark matter in simplified models including light mediators. We find that the energy dependence in the scattering cross section is significant, and produces stronger bounds than previously found (which assumed constant cross sections) by many orders of magnitude at low dark matter mass. Finally, we compute the "neutrino-floor" that will limit future direct detection searches for cosmic ray-upscattered dark matter. While we focus on vector interactions for illustration, we emphasize that the energy dependence is critical in determining accurate bounds on any particle physics model of dark matter-cosmic ray interactions from experimental data on this scenario.
DOEUnited States Department of Energy (DOE) [desc0010813]; U.S. Department of EnergyUnited States Department of Energy (DOE) [DE-SC0020250]; Australian Research CouncilAustralian Research Council; National Science FoundationNational Science Foundation (NSF) [NSF PHY-1820801]; NSFNational Science Foundation (NSF) [PHY-1748958]
We are grateful for helpful discussion with Chris Cappiello, Shunsaku Horiuchi, and Maxim Pospelov. B. D. acknowledges support from DOE Grant No. desc0010813. The work of I. M. S. is supported by the U.S. Department of Energy under the Award No. DE-SC0020250. J. L. N. is supported in part by the Australian Research Council. J. B. D. acknowledges support from the National Science Foundation under Grant No. NSF PHY-1820801. The research of J. B. D. was also supported in part by NSF Grant No. PHY-1748958.
2020-12-21T15:40:14Z
2020-12-21T15:40:14Z
2020-06-15
Article - Refereed
Text
StillImage
1550-7998
116007
http://hdl.handle.net/10919/101561
https://doi.org/10.1103/PhysRevD.101.116007
101
11
1550-2368
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
application/pdf
application/pdf
oai:vtechworks.lib.vt.edu:10919/1122572022-10-25T07:14:35Zcom_10919_8195com_10919_25799com_10919_24211com_10919_5553col_10919_18629col_10919_24287
Combinatoric topological string theories and group theory algorithms
Journal of High Energy Physics
Ramgoolam, Sanjaye
Sharpe, Eric
A number of finite algorithms for constructing representation theoretic data from group multiplications in a finite group G have recently been shown to be related to amplitudes for combinatoric topological strings (G-CTST) based on Dijkgraaf-Witten theory of flat G-bundles on surfaces. We extend this result to projective representations of G using twisted Dijkgraaf-Witten theory. New algorithms for characters are described, based on handle creation operators and minimal multiplicative generating subspaces for the centers of group algebras and twisted group algebras. Such minimal generating subspaces are of interest in connection with information theoretic aspects of the AdS/CFT correspondence. For the untwisted case, we describe the integrality properties of certain character sums and character power sums which follow from these constructive G-CTST algorithms. These integer sums appear as residues of singularities in G-CTST generating functions. S-duality of the combinatoric topological strings motivates the definition of an inverse handle creation operator in the centers of group algebras and twisted group algebras.
Published version
2022-10-24T12:19:23Z
2022-10-24T12:19:23Z
2022-10-20
2022-10-23T03:19:18Z
Article - Refereed
Text
Journal of High Energy Physics. 2022 Oct 20;2022(10):147
http://hdl.handle.net/10919/112257
https://doi.org/10.1007/JHEP10(2022)147
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
The Author(s)
application/pdf
application/pdf
oai:vtechworks.lib.vt.edu:10919/731282024-03-13T14:10:09Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Slow relaxation and aging kinetics for the driven lattice gas
Physical Review E
Daquila, G. L.
Täuber, Uwe C.
Physics
Physics, Fluids & Plasmas
Physics, Mathematical
Physics
ASYMMETRIC EXCLUSION PROCESS
NOISY BURGERS-EQUATION
PARISI-ZHANG EQUATION
SCALING FUNCTIONS
BALLISTIC DEPOSITION
GROWING INTERFACES
DIFFUSIVE SYSTEMS
DIRECTED POLYMERS
SPECTRAL GAP
GROWTH
Published version
2016-09-30T13:18:03Z
2016-09-30T13:18:03Z
2011-05-04
Article - Refereed
1539-3755
http://hdl.handle.net/10919/73128
https://doi.org/10.1103/PhysRevE.83.051107
83
5
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000290230600004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
? - ? (11) page(s)
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/247462022-03-29T20:31:45Zcom_10919_24211com_10919_5553col_10919_24287
Dark matter, infinite statistics, and quantum gravity
Physical Review D
Ho, C. M.
Minic, Djordje
Ng, Y. J.
Physics
black-holes
accelerated detectors
particle statistics
local
observables
sitter spaces
string theory
energy
mond
Schwarzschild
Temperature
Astronomy & Astrophysics
Physics
We elaborate on our proposal regarding a connection between global physics and local galactic dynamics via quantum gravity. This proposal calls for the concept of MONDian dark matter which behaves like cold dark matter at cluster and cosmological scales but emulates modified Newtonian dynamics (MOND) at the galactic scale. In the present paper, we first point out a surprising connection between the MONDian dark matter and an effective gravitational Born-Infeld theory. We then argue that these unconventional quanta of MONDian dark matter must obey infinite statistics, and the theory must be fundamentally nonlocal. Finally, we provide a possible top-down approach to our proposal from the matrix theory point of view.
US Department of Energy DE-FG05-85ER40226, DE-FG05-92ER40677, DE-FG02-06ER41418
Accepted manuscript
2013-12-18T19:46:39Z
2013-12-18T19:46:39Z
2012-05-21
2013-12-16
Article - Refereed
Text
Ho, Chiu Man ; Minic, Djordje ; Ng, Y. Jack, MAY 21 2012. “Dark matter, infinite statistics, and quantum gravity,” PHYSICAL REVIEW D 85(10): 104033. DOI: 10.1103/PhysRevD.85.104033
1550-7998
http://hdl.handle.net/10919/24746
http://link.aps.org/doi/10.1103/PhysRevD.85.104033
https://doi.org/10.1103/PhysRevD.85.104033
en_US
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/245172020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Geometry-dependent electronic properties of highly fluorescent conjugated molecules
Physical Review Letters
Yang, S. C.
Graupner, W.
Guha, S.
Puschnig, P.
Martin, C.
Chandrasekhar, H. R.
Chandrasekhar, M.
Leising, G.
Ambrosch-Draxl, C.
Scherf, U.
Physics
Virginia Tech
poly(p-phenylene vinylene)
photoinduced absorption
optical-properties
lowest singlet
excited-states
chain-length
polymers
oligomers
poly(para-phenylene)
oligothiophenes
Physics
We present a combined experimental/theoretical study of the electronic properties of conjugated para-phenylene type molecules under high pressure up to 80 kbar. Pressure is used as a tool to vary the molecular geometry and intermolecular interaction. The influence of the latter two on singlet and triplet excitons as well as polarons is monitored via optical spectroscopy. We have performed bond structure calculations for the planar poly(para-phenylene) and calculated the dielectric function. By varying the intermolecular distances and the length of the polymer repeat unit the observed pressure effects can be explained.
2013-12-10T17:31:20Z
2013-12-10T17:31:20Z
2000-09-11
2013-12-10
Article - Refereed
Yang, SC ; Graupner, W ; Guha, S ; et al., Sep 11, 2000. “Geometry-dependent electronic properties of highly fluorescent conjugated molecules,” PHYSICAL REVIEW LETTERS 85(11): 2388-2391. DOI: 10.1103/PhysRevLett.85.2388
0031-9007
http://hdl.handle.net/10919/24517
http://link.aps.org/doi/10.1103/PhysRevLett.85.2388
https://doi.org/10.1103/PhysRevLett.85.2388
en_US
In Copyright
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/732892024-03-13T14:09:59Zcom_10919_5com_10919_25799com_10919_24464com_10919_24211com_10919_5553col_10919_70873col_10919_24465col_10919_24287
Constraining non-standard interactions of the neutrino with Borexino
Journal of High Energy Physics
Agarwalla, S. K.
Lombardi, Francesco
Takeuchi, Tatsu
Center for Neutrino Physics
Physics
Physics, Particles & Fields
Physics
Neutrino Physics
Solar and Atmospheric Neutrinos
Beyond Standard Model
TEST FACILITY
SCATTERING
STANDARD
DETECTOR
ELECTRONS
ABUNDANCE
MATTER
VACUUM
LIMITS
MODEL
We use the Borexino 153.6 ton·year data to place constraints on non-standard neutrino-electron interactions, taking into account the uncertainties in the 7Be solar neutrino flux and the mixing angle θ 23, and backgrounds due to 85Kr and 210Bi β-decay. We find that the bounds are comparable to existing bounds from all other experiments. Further improvement can be expected in Phase II of Borexino due to the reduction in the 85Kr background.
Published version
2016-10-19T00:00:27Z
2016-10-19T00:00:27Z
2012-12-01
Article - Refereed
1029-8479
http://hdl.handle.net/10919/73289
https://doi.org/10.1007/JHEP12(2012)079
12
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000313124000014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
? - ? (21) page(s)
application/pdf
Springer
oai:vtechworks.lib.vt.edu:10919/247792020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Thermal versus quantum fluctuations of optical-lattice fermions
Physical Review A
Campo, V. L. Jr.
Capelle, K.
Hooley, C.
Quintanilla, J.
Scarola, Vito W.
Physics
Virginia Tech
mott insulator
hubbard-model
physics
gases
We show that, for fermionic atoms in a one-dimensional optical lattice, the fraction of atoms in doubly occupied sites is a highly nonmonotonic function of temperature. We demonstrate that this property persists even in the presence of realistic harmonic confinement, and that it leads to a suppression of entropy at intermediate temperatures that offers a route to adiabatic cooling. Our interpretation of the suppression is that such intermediate temperatures are simultaneously too high for quantum coherence and too low for significant thermal excitation of double occupancy thus offering a clear indicator of the onset of quantum fluctuations.
Jeffress Memorial Trust_J-992
AFOSR FA9550-11-1-0313
Defense Advanced Research Projects Agency (DARPA) N66001-11-1-4122
Science and Technology Facilities Council (STFC)
South East Physics Network (SEPnet)
University of Kent
Brazilian agency CNPq
2014-01-03T16:01:24Z
2014-01-03T16:01:24Z
2012-03-29
2013-12-18
Article - Refereed
Campo, V. L., Jr. ; Capelle, K. ; Hooley, C. ; et al., Mar 29, 2012. “Thermal versus quantum fluctuations of optical-lattice fermions,” PHYSICAL REVIEW A 85(3): 033644. DOI: 10.1103/PhysRevA.85.033644
1050-2947
http://hdl.handle.net/10919/24779
http://link.aps.org/doi/10.1103/PhysRevA.85.033644
https://doi.org/10.1103/PhysRevA.85.033644
en_US
In Copyright
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/254232022-04-08T04:42:12Zcom_10919_24214com_10919_5539com_10919_24211com_10919_5553col_10919_24288col_10919_24287
Thickness dependence, in situ measurements, and morphology of thermally controlled interdiffusion in polymer-C-60 photovoltaic devices
Physical Review B
Drees, M.
Davis, Ruth M.
Heflin, James R.
Chemical Engineering
Physics
Virginia Tech
Photoinduced electron-transfer
Solar cells
Semiconducting polymers
Conducting-polymer
Exciton diffusion
Acceptor
Blends
Buckminsterfullerene
Dissociation
Temperature
Physics
A series of detailed studies is presented in which heat-induced interdiffusion is used to create a gradient bulk-heterojunction of 2-methoxy-5-(2(')-ethylhexyloxy)-1,4-phenylenevinylene (MEH-PPV) copolymer and C-60. Starting from a bilayer of spin-cast MEH-PPV and sublimed C-60, films are heated in the vicinity of the glass transition temperature of the polymer to induce an interdiffusion of polymer and fullerene. Variation of the polymer layer thickness shows that the photocurrents increase with decreasing layer thickness within the examined thickness regime as transport of the separated charges out of the film is improved. The interdiffusion was observed in situ by monitoring the photocurrents during the heating process and exhibited a rapid rise during the first five minutes. Cross-sectional transmission electron microscopy studies show that C-60 forms clusters of up to 30 nm in diameter in the polymer bulk of the interdiffused devices. This clustering of the fullerene molecules puts a significant constraint on the interdiffusion process that can be alleviated by use of donor-acceptor combinations with better miscibility.
2014-02-11T13:46:04Z
2014-02-11T13:46:04Z
2004-04-28
2013-12-18
Article - Refereed
Text
Drees, M ; Davis, RM ; Heflin, JR, Apr 2004. "Thickness dependence, in situ measurements, and morphology of thermally controlled interdiffusion in polymer-C-60 photovoltaic devices," PHYSICAL REVIEW B 69(16): 165320. DOI: 10.1103/PhysRevB.69.165320
1098-0121
http://hdl.handle.net/10919/25423
http://link.aps.org/doi/10.1103/PhysRevB.69.165320
https://doi.org/10.1103/PhysRevB.69.165320
en_US
In Copyright
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/1174542024-03-14T13:36:14Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Measurement of the mass and width of the Lambda(c) (2625)(+) charmed baryon and the branching ratios of Lambda(c) (2625)(+)-> Sigma(0)(c)pi(+) and Lambda(c) (2625)(+) -> Sigma(++)(c)pi(-)
Physical Review D
Wang, D.
Yelton, J.
Adachi, I.
Ahn, J. K.
Aihara, H.
Asner, D. M.
Atmacan, H.
Ayad, R.
Babu, V.
Banerjee, Sw
Bauer, M.
Behera, P.
Belous, K.
Bennett, J.
Bessner, M.
Bilka, T.
Biswas, D.
Bodrov, D.
Borah, J.
Bozek, A.
Bracko, M.
Branchini, P.
Browder, T. E.
Budano, A.
Campajola, M.
Cervenkov, D.
Chang, M. -C.
Chen, A.
Cheon, B. G.
Cho, H. E.
Cho, K.
Cho, S. -J.
Choi, S. -K.
Choi, Y.
Choudhury, S.
Cinabro, D.
Das, S.
De Nardo, G.
De Pietro, G.
Dhamija, R.
Di Capua, F.
Dole, Z.
Dong, T. V.
Dossett, D.
Epifanov, D.
Ferber, T.
Ferlewicz, D.
Fulsom, B. G.
Garg, R.
Gaur, V.
Giri, A.
Goldenzweig, P.
Graziani, E.
Gu, T.
Gudkova, K.
Hadjivasiliou, C.
Han, X.
Hayasaka, K.
Hayashii, H.
Hedges, M. T.
Hsu, C. -L.
Inami, K.
Ipsita, N.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Jacobs, W. W.
Jang, E. -J.
Jia, S.
Jin, Y.
Kaliyar, A. B.
Kang, K. H.
Kawasaki, T.
Kiesling, C.
Kim, C. H.
Kim, D. Y.
Kim, K. -H.
Kim, Y. -K.
Kinoshita, K.
Kodys, P.
Korobov, A.
Korpar, S.
Kovalenko, E.
Krizan, P.
Krokovny, P.
Kumar, M.
Kumar, R.
Kumara, K.
Kwon, Y. -J.
Lam, T.
Lange, J. S.
Lee, S. C.
Levit, D.
Lewis, P.
Li, L. K.
Li, Y.
Li, Y. B.
Li Gioi, L.
Libby, J.
Lieret, K.
Lin, Y. -R.
Liventsev, D.
Matsuda, T.
Matvienko, D.
Meier, F.
Merola, M.
Metzner, F.
Miyabayashi, K.
Mizuk, R.
Mohanty, G. B.
Mussa, R.
Nakamura, I.
Nakano, T.
Nakao, M.
Natkaniec, Z.
Natochii, A.
Nayak, L.
Nayak, M.
Nisar, N. K.
Nishida, S.
Ogawa, S.
Ono, H.
Oskin, P.
Pakhlova, G.
Pardi, S.
Park, H.
Park, J.
Patra, S.
Paul, S.
Pedlar, T. K.
Pestotnik, R.
Piilonen, L. E.
Podobnik, T.
Prencipe, E.
Prim, M. T.
Rout, N.
Russo, G.
Sandilya, S.
Sangal, A.
Santelj, L.
Savinov, V.
Schnell, G.
Schueler, J.
Schwanda, C.
Seino, Y.
Senyo, K.
Sevior, M. E.
Shan, W.
Shapkin, M.
Sharma, C.
Shen, C. P.
Shiu, J. -G.
Sokolov, A.
Solovieva, E.
Staric, M.
Sumihama, M.
Sumiyoshi, T.
Sutcliffe, W.
Takizawa, M.
Tamponi, U.
Tanida, K.
Tenchini, F.
Uchida, M.
Uno, S.
van Tonder, R.
Varner, G.
Varvell, K. E.
Vinokurova, A.
Wang, M. -Z.
Wang, X. L.
Watanabe, M.
Watanuki, S.
Werbycka, O.
Won, E.
Xu, X.
Yabsley, B. D.
Yan, W.
Yang, S. B.
Yin, J. H.
Yuan, C. Z.
Yuan, L.
Zhang, Z. P.
Zhilich, V.
Zhukova, V.
Using the entire data sample of 980 fb-1 collected at or near the ϒ(4S) resonance with the Belle detector operating at the KEKB asymmetric-energy e+e- collider, we report the measurement of the mass, width, and the branching ratios of the Λc(2625)+ charmed baryon. The mass difference between Λc(2625)+ and Λc+ is measured to be M(Λc(2625)+)-M(Λc+)=341.518±0.006±0.049 MeV/c2. The upper limit on the width is measured to be Γ(Λc(2625)+)<0.52 MeV/c2 at 90% confidence level. Based on a full Dalitz plot fit, branching ratios with respect to the mode Λc(2625)+→Λc+π+π- are measured to be B(Λc(2625)+→ςc0π+)B(Λc(2625)+→Λc+π+π-)=(5.19±0.23±0.40)% and B(Λc(2625)+→ςc++π-)B(Λc(2625)+→Λc+π+π-)=(5.13±0.26±0.32)%, where the first and second uncertainties are statistical and systematic, respectively. These measurements can be used to further constrain the parameters of the underlying theoretical models.
Published version
2024-01-22T13:44:28Z
2024-01-22T13:44:28Z
2023-02-21
Article - Refereed
Article
Journal
Text
ARTN 032008 (Article number)
2470-0010
https://hdl.handle.net/10919/117454
https://doi.org/10.1103/PhysRevD.107.032008
107
3
Piilonen, Leo [0000-0001-6836-0748]
2470-0029
en
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10 page(s)
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oai:vtechworks.lib.vt.edu:10919/478172020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Configuration fluctuations and the dilute-magnetic-alloy problem
Physical Review B
Bowen, Samuel P.
Physics
Virginia Tech
physics, condensed matter
A new theoretical treatment of the Anderson model of transition-metal or rare-earth impurities in a simple metal is presented. This study treats the impurity Coulomb correlation exactly and the host impurity coupling to lowest order in the sense of a self-consistent degenerate perturbation theory. The central result of this work is that if an impurity interconfigurational excitation energy (ICEE) is close to the Fermi energy in the atomic limit, a temperature-dependent shift of the ICEE is found for the interacting system. This temperature-dependent shift is shown to give a good description of the experimental observations on dilute magnetic alloys.
2014-05-07T15:36:52Z
2014-05-07T15:36:52Z
1978-10
2014-04-23
Article - Refereed
Bowen, S. P., "Configuration fluctuations and the dilute-magnetic-alloy problem," Phys. Rev. B 18, 3400 DOI: http://dx.doi.org/10.1103/PhysRevB.18.3400
0163-1829
http://hdl.handle.net/10919/47817
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.18.3400
https://doi.org/10.1103/PhysRevB.18.3400
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/967162020-10-22T03:36:09Zcom_10919_86665com_10919_24211com_10919_5553com_10919_19035com_10919_5539col_10919_86666col_10919_24290col_10919_24287
Strongly Bent Double-Stranded DNA: Reconciling Theory and Experiment
Frontiers in Physics
Drozdetski, Aleksander V.
Mukhopadhyay, Abhishek
Onufriev, Alexey V.
Center for Soft Matter and Biological Physics
Computer Science
Physics
polymer bending
DNA
convex hull
deformation
cyclization
j-factor
The strong bending of polymers is poorly understood. We propose a general quantitative framework of polymer bending that includes both the weak and strong bending regimes on the same footing, based on a single general physical principle. As the bending deformation increases beyond a certain (polymer-specific) point, the change in the convexity properties of the effective bending energy of the polymer makes the harmonic deformation energetically unfavorable: in this strong bending regime the energy of the polymer varies linearly with the average bending angle as the system follows the convex hull of the deformation energy function. For double-stranded DNA, the effective bending deformation energy becomes non-convex for bends greater than similar to 2 degrees per base-pair, equivalent to the curvature of a closed circular loop of similar to 160 base pairs. A simple equation is derived for the polymer loop energy that covers both the weak and strong bending regimes. The theory shows quantitative agreement with recent DNA cyclization experiments on short DNA fragments, while maintaining the expected agreement with experiment in the weak bending regime. Counter-intuitively, cyclization probability (j-factor) of very short DNA loops is predicted to increase with decreasing loop length; the j-factor reaches its minimum for loops of similar or equal to 45 base pairs. Atomistic simulations reveal that the attractive component of the short-range Lennard-Jones interaction between the backbone atoms can explain the underlying non-convexity of the DNA effective bending energy, leading to the linear bending regime. Applicability of the theory to protein-DNA complexes, including the nucleosome, is discussed.
National Institutes of HealthUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USA [R21 GM131228]; National Science FoundationNational Science Foundation (NSF) [MCB-1715207]
This work was supported in part by the National Institutes of Health (R21 GM131228) and the National Science Foundation (MCB-1715207).
2020-02-05T13:55:53Z
2020-02-05T13:55:53Z
2019-11-29
Article - Refereed
Text
StillImage
2296-424X
195
http://hdl.handle.net/10919/96716
https://doi.org/10.3389/fphy.2019.00195
7
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
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oai:vtechworks.lib.vt.edu:10919/728622022-06-16T17:38:41Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Measurement of the Spectral Function of 40Ar through the (e, e'p) reaction
Ankowski, Artur M.
Beminiwattha, R. S.
Benhar, Omar
Crabb, D. G.
Day, D. B.
Garibaldi, F.
Garvey, G. T.
Gaskell, D.
Giusti, C.
Hansen, O.
Higinbotham, D. W.
Holmes, R.
Jen, C. M.
Jiang, X.
Keller, D.
Keppel, C. E.
Lindgren, R.
Link, Jonathan M.
Liyanage, N.
Mariani, Camillo
Meucci, A.
Mills, G. B.
Myers, L.
Pitt, M. L.
Rondon, O. A.
Sakuda, M.
Sawatzky, B.
Souder, P. A.
Urciuoli, G. M.
Wood, S.
Zhang, J.
Physics
nucl-ex
nucl-th
The interpretation of the signals detected by high precision experiments aimed at measuring neutrino oscillations requires an accurate description of the neutrino-nucleus cross sections. One of the key element of the analysis is the treatment of nuclear effects, which is one of the main sources of systematics for accelerator based experiments such as the Long Baseline Neutrino Experiment (LBNE). A considerable effort is currently being made to develop theoretical models capable of providing a fully quantitative description of the neutrino-nucleus cross sections in the kinematical regime relevant to LBNE. The approach based on nuclear many-body theory and the spectral function formalism has proved very successful in explaining the available electron scattering data in a variety of kinematical conditions. The first step towards its application to the analysis of neutrino data is the derivation of the spectral functions of nuclei employed in neutrino detectors, in particular argon. We propose a measurement of the coincidence (e, e'p) cross section on argon. This data will provide the experimental input indispensable to construct the argon spectral function, thus paving the way for a reliable estimate of the neutrino cross sections. In addition, the analysis of the (e, e'p) data will help a number of theoretical developments, like the description of final-state interactions needed to isolate the initial-state contributions to the observed single-particle peaks, that is also needed for the interpretation of the signal detected in neutrino experiments.
28 pages, 4 figures, Proposal PR12-14-012 submitted to the JLAB PAC 42, July 2014
2016-09-01T00:52:20Z
2016-09-01T00:52:20Z
2014-07
Proposal
http://hdl.handle.net/10919/72862
http://arxiv.org/abs/1406.4080v1
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oai:vtechworks.lib.vt.edu:10919/1171422024-03-13T14:08:54Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Observation of a threshold cusp at the Λη threshold in the pK<SUP>-</SUP> mass spectrum with Λ<sub>c</sub><SUP>+</SUP> → pK<SUP>-</SUP> π<SUP>+</SUP> decays
Physical Review D
Yang, S. B.
Tanida, K.
Ahn, J. K.
Adachi, I.
Aihara, H.
Asner, D. M.
Atmacan, H.
Aulchenko, V.
Aushev, T.
Ayad, R.
Babu, V.
Behera, P.
Belous, K.
Bennett, J.
Bessner, M.
Bhardwaj, V.
Bhuyan, B.
Bodrov, D.
Borah, J.
Bozek, A.
Branchini, P.
Browder, T. E.
Budano, A.
Campajola, M.
Cervenkov, D.
Chang, M. -C.
Chang, P.
Cheon, B. G.
Chilikin, K.
Cho, E.
Cho, K.
Cho, S. -J.
Choi, S. -K.
Choi, Y.
Choudhury, S.
Cinabro, D.
Das, S.
De Pietro, G.
Dhamija, R.
Di Capua, F.
Dolezal, Z.
Dong, T.
Dossett, D.
Epifanov, D.
Fulsom, B. G.
Garg, R.
Gaur, V.
Garmash, A.
Giri, A.
Goldenzweig, P.
Graziani, E.
Gu, T.
Guan, Y.
Gudkova, K.
Hadjivasiliou, C.
Hayasaka, K.
Hayashii, H.
Hou, W. -S.
Hsu, C. -L.
Iijima, T.
Inami, K.
Ipsita, N.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Iwasaki, Y.
Jacobs, W. W.
Jang, E. -J.
Ji, Q. P.
Jia, S.
Jin, Y.
Joo, K. K.
Kang, K. H.
Karyan, G.
Kawasaki, T.
Kichimi, H.
Kiesling, C.
Kim, C. H.
Kim, D. Y.
Kim, K. -H.
Kim, Y. J.
Kim, Y. -K.
Kindo, H.
Kodys, P.
Konno, T.
Korobov, A.
Korpar, S.
Kovalenko, E.
Krizan, P.
Krokovny, P.
Kumar, M.
Kumar, R.
Kumara, K.
Kwon, Y. -J.
Lam, T.
Lange, J. S.
Laurenza, M.
Lee, J. Y.
Lee, S. C.
Li, C. H.
Li, J.
Li, L. K.
Li, Y.
Gioi, L. Li
Libby, J.
Lieret, K.
Liventsev, D.
Luo, T.
Masuda, M.
Matsuda, T.
Matvienko, D.
Maurya, S. K.
Meier, F.
Merola, M.
Metzner, F.
Miyabayashi, K.
Mizuk, R.
Mohanty, G. B.
Nakamura, I.
Nakano, T.
Nakao, M.
Natkaniec, Z.
Natochii, A.
Nayak, L.
Niiyama, M.
Nisar, N. K.
Nishida, S.
Ono, H.
Oskin, P.
Pakhlov, P.
Pakhlova, G.
Pardi, S.
Park, H.
Park, S. -H.
Passeri, A.
Patra, S.
Paul, S.
Pedlar, T. K.
Pestotnik, R.
Piilonen, L. E.
Podobnik, T.
Prencipe, E.
Prim, M. T.
Rout, N.
Russo, G.
Sandilya, S.
Santelj, L.
Savinov, V.
Schnell, G.
Schueler, J.
Schwanda, C.
Seino, Y.
Senyo, K.
Sevior, M. E.
Shapkin, M.
Sharma, C.
Shen, C. P.
Shiu, J. -G.
Singh, J. B.
Sokolov, A.
Solovieva, E.
Staric, M.
Sumihama, M.
Sumiyoshi, T.
Sutcliffe, W.
Takizawa, M.
Tamponi, U.
Tenchini, F.
Trabelsi, K.
Tsuboyama, T.
Uchida, M.
Uglov, T.
Unno, Y.
Uno, S.
Ushiroda, Y.
Usov, Y.
van Tonder, R.
Varner, G.
Vossen, A.
Waheed, E.
Wang, E.
Wang, M. -Z.
Wang, X. L.
Watanabe, M.
Watanuki, S.
Werbycka, O.
Won, E.
Yabsley, B. D.
Yan, W.
Yelton, J.
Yin, J. H.
Yuan, C. Z.
Yusa, Y.
Zhai, Y.
Zhang, Z. P.
Zhilich, V.
Zhukova, V.
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
5106 Nuclear and Plasma Physics
5107 Particle and High Energy Physics
51 Physical Sciences
We observe a narrow peaking structure in the pK- invariant-mass spectrum near the Λη threshold. The peak is clearly seen in 1.5 million events of Λc+→pK-π+ decay using the 980 fb-1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e- collider. We try two approaches to explain this structure: as a new resonance and as a cusp at the Λη threshold. The best fit is obtained with a coherent sum of a Flatté function and a constant background amplitude with the reduced χ2 of 257/243 (p=0.25), while the fits to Breit-Wigner functions are unfavored by more than 7σ. The best fit explains the structure as a cusp at the Λη threshold, and the obtained parameters are consistent with the known properties of Λ(1670). The observation gives the first identification of a threshold cusp in hadrons from the spectrum shape.
Published version
2023-12-08T18:19:20Z
2023-12-08T18:19:20Z
2023-08-16
2023-08-16
Article - Refereed
Article
Journal
ARTN L031104 (Article number)
2470-0010
https://hdl.handle.net/10919/117142
https://doi.org/10.1103/PhysRevD.108.L031104
108
3
Piilonen, Leo [0000-0001-6836-0748]
2470-0029
English
http://dx.doi.org/10.1103/physrevd.108.l031104
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
6 page(s)
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/1174742024-03-13T14:08:43Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Measurement of the branching fraction and CP asymmetry for B -> (D)over-bar(0)pi decays
Physical Review D
Bloomfield, T.
Sevior, M. E.
Adachi, I.
Aihara, H.
Al Said, S.
Asner, D. M.
Aulchenko, V.
Aushev, T.
Ayad, R.
Babu, V.
Bahinipati, S.
Behera, P.
Bennett, J.
Bessner, M.
Bilka, T.
Biswal, J.
Bobrov, A.
Bonvicini, G.
Bozek, A.
Bracko, M.
Browder, T. E.
Campajola, M.
Cao, L.
Cervenkov, D.
Chang, M. -C.
Chekelian, V.
Chen, A.
Cheon, B. G.
Chilikin, K.
Cho, H. E.
Cho, K.
Cho, S. -J.
Choi, S. -K.
Choi, Y.
Choudhury, S.
Cinabro, D.
Cunliffe, S.
Das, S.
Dash, N.
De Nardo, G.
Dhamija, R.
Di Capua, F.
Dolezal, Z.
V. Dong, T.
Dubey, S.
Eidelman, S.
Epifanov, D.
Ferber, T.
Ferlewicz, D.
Fulsom, B. G.
Garg, R.
Gaur, V.
Garmash, A.
Giri, A.
Goldenzweig, P.
Hadjivasiliou, C.
Halder, S.
Hartbrich, O.
Hayasaka, K.
Hayashii, H.
Hedges, M. T.
Villanueva, M. Hernandez
Hou, W. -S.
Hsu, C. -L.
Iijima, T.
Inguglia, G.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Iwasaki, Y.
Jacobs, W. W.
Jang, E. -J.
Jia, S.
Jin, Y.
Joo, C. W.
Joo, K. K.
Kaliyar, A. B.
Kang, K. H.
Karyan, G.
Kawasaki, T.
Kim, C. H.
Kim, D. Y.
Kim, H. J.
Kim, S. H.
Kim, Y. -K.
Kimmel, T. D.
Kodys, P.
Konno, T.
Korobov, A.
Korpar, S.
Kovalenko, E.
Krizan, P.
Kroeger, R.
Krokovny, P.
Kumar, M.
Kumar, R.
Kumara, K.
Kwon, Y. -J.
Lalwani, K.
Lange, J. S.
Lee, I. S.
Lee, S. C.
Li, C. H.
Li, J.
Li, Y. B.
Li Gioi, L.
Libby, J.
Lieret, K.
Liventsev, D.
Luo, T.
MacQueen, C.
Masuda, M.
Matsuda, T.
Matvienko, D.
Merola, M.
Metzner, F.
Miyabayashi, K.
Mizuk, R.
Mohanty, G. B.
Mohanty, S.
Moon, H. K.
Mussa, R.
Nakao, M.
Natkaniec, Z.
Natochii, A.
Nayak, L.
Nayak, M.
Niiyama, M.
Nisar, N. K.
Nishida, S.
Ono, H.
Onuki, Y.
Oskin, P.
Pakhlov, P.
Pakhlova, G.
Pardi, S.
Park, H.
Park, S. -H.
Paul, S.
Pedlar, T. K.
Pestotnik, R.
Piilonen, L. E.
Podobnik, T.
Popov, V.
Prencipe, E.
Prim, M. T.
Ritter, M.
Rostomyan, A.
Rout, N.
Rozanska, M.
Russo, G.
Sahoo, D.
Sakai, Y.
Sandilya, S.
Sangal, A.
Santelj, L.
Sanuki, T.
Savinov, V.
Schnell, G.
Schueler, J.
Schwanda, C.
Schwartz, A. J.
Seino, Y.
Senyo, K.
Shapkin, M.
Sharma, C.
Shen, C. P.
Shiu, J. -G.
Shwartz, B.
Simon, F.
Sokolov, A.
Solovieva, E.
Staric, M.
Stottler, Z. S.
Strube, J. F.
Sumihama, M.
Sumisawa, K.
Sumiyoshi, T.
Sutcliffe, W.
Takizawa, M.
Tanida, K.
Tao, Y.
Tenchini, F.
Trabelsi, K.
Uchida, M.
Uno, K.
Uno, S.
Usov, Y.
Vahsen, S. E.
Van Tonder, R.
Varner, G.
Varvell, K. E.
Vossen, A.
Waheed, E.
Wang, C. H.
Wang, E.
Wang, M. -Z.
Wang, P.
Watanabe, M.
Watanuki, S.
Werbycka, O.
Wiechczynski, J.
Won, E.
Xu, X.
Yabsley, B. D.
Yan, W.
Yang, S. B.
Ye, H.
Yin, J. H.
Yuan, C. Z.
Zhang, Z. P.
Zhilich, V.
Zhukova, V.
Zhulanov, V.
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
4902 Mathematical Physics
5107 Particle and High Energy Physics
49 Mathematical Sciences
51 Physical Sciences
We measure the branching fractions and CP asymmetries for the decays B0→D¯0π0 and B+→D¯0π+, using a data sample of 772×106 BB¯ pairs collected at the (4S) resonance with the Belle detector at the KEKB e+e- collider. The branching fractions obtained and direct CP asymmetries are B(B0→D¯0π0)=[2.70±0.06(stat)±0.10(syst)]×10-4, B(B+→D¯0π+)=[4.53±0.02(stat)±0.15(syst)]×10-3, ACP(B0→D¯0π0)=[+0.42±2.05(stat)±1.22(syst)]%, and ACP(B+→D¯0π+)=[+0.19±0.36(stat)±0.57(syst)]%. The measurements of B are the most precise to date and are in good agreement with previous results, as is the measurement of ACP(B+→D¯0π+). The measurement of ACP for B0→D¯0π0 is the first for this mode, and the value is consistent with Standard Model expectations.
Published version
2024-01-22T13:46:35Z
2024-01-22T13:46:35Z
2022-04-25
2022-04-25
Article
Article
Journal
Text
ARTN 072007 (Article number)
2470-0010
https://hdl.handle.net/10919/117474
https://doi.org/10.1103/PhysRevD.105.072007
105
7
Piilonen, Leo [0000-0001-6836-0748]
2470-0029
en
http://dx.doi.org/10.1103/physrevd.105.072007
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
13 page(s)
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/247542022-04-05T02:36:54Zcom_10919_24722com_10919_24211com_10919_5553col_10919_24723col_10919_24287
NuTeV anomaly, neutrino mixing, and a heavy Higgs boson
Physical Review D
Loinaz, William
Okamura, Naotoshi
Takeuchi, Tatsu
Wijewardhana, L. C. R.
Institute for Particle, Nuclear and Astronomical Sciences (IPNAS)
Physics
Virginia Tech
fermion pair production
supersymmetric standard model
extra
dimensions
sin(2) theta(w)
qed corrections
mass
annihilation
oscillation
parameters
calculate
Astronomy & Astrophysics
Physics
Recent results from the NuTeV experiment at Fermilab and the deviation of the Z invisible width, measured at CERN LEP and the SLAC Linear Collider, from its standard model (SM) prediction suggest the suppression of neutrino-Z couplings. Such suppressions occur naturally in models which mix the neutrinos with heavy gauge singlet states. We postulate a universal suppression of the Znunu couplings by a factor of (1-epsilon) and perform a fit to the Z-pole and NuTeV observables with epsilon and the oblique correction parameters S and T. Compared to a fit with S and T only, the inclusion of epsilon leads to a dramatic improvement in the quality of the fit. The values of S and T preferred by the fit can be obtained within the SM by a simple increase in the Higgs boson mass. However, if the W mass is also included in the fit, a non-zero U parameter becomes necessary which cannot be supplied within the SM. The preferred value of epsilon suggests that the seesaw mechanism may not be the reason why neutrinos are so light.
2013-12-18T19:46:40Z
2013-12-18T19:46:40Z
2003-04
2013-12-16
Article - Refereed
Loinaz, W ; Okamura, N ; Takeuchi, T ; et al., APR 2003. “NuTeV anomaly, neutrino mixing, and a heavy Higgs boson,” PHYSICAL REVIEW D 67(7): 073012. DOI: 10.1103/PhysRevD.67.073012
1550-7998
http://hdl.handle.net/10919/24754
http://link.aps.org/doi/10.1103/PhysRevD.67.073012
https://doi.org/10.1103/PhysRevD.67.073012
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/478192022-02-26T22:22:49Zcom_10919_24211com_10919_5553col_10919_24287
Critical behavior at m-axial Lifshitz points: Field-theory analysis and epsilon-expansion results
Physical Review B
Diehl, H. W.
Shpot, M. A.
Physics
Virginia Tech
neighbor ising-model
monte-carlo
phase-transitions
scale-invariance
helical order
systems
onset
physics, condensed matter
The critical behavior of d-dimensional systems with an n-component order parameter is reconsidered at (m,d,n)-lifshitz points, where a wave-vector instability occurs in an m-dimensional subspace of R-d. Our aim is to sort out which ones of the previously published partly contradictory epsilon -expansion results to second order in epsilon =4+ m/2-d are correct. To this end, a field-theory calculation is performed directly in the position space of d=4+m/2-epsilon dimensions, using dimensional regularization and minimal subtraction of ultraviolet poles. The residua of the dimensionally regularized integrals that are required to determine the series expansions of the correlation exponents eta (12), and eta (14) and of the wave-vector exponent beta (q) to order epsilon (2) are reduced to single integrals, which for general m= 1,...,d-1 can be computed numerically, and for special values of nt, analytically. Our results are at variance with the original predictions for general m. For m = 2 and m = 6, we confirm the results of Sak and Grest [Phys. Rev. B 17, 3602 (1978)] and Mergulhao and Carneiro's recent held-theory analysis [Phys. Rev. B 59, 13 954 (1999)].
Deutsche Forschungsgemeinschaft through the Leibniz program and Sonderforschungsbereich 237 ‘‘Unordnung und grosse Fluktuationen.’’
2014-05-07T15:36:52Z
2014-05-07T15:36:52Z
2000-11
2014-04-23
Article - Refereed
Diehl, H. W.; Shpot, M., "Critical behavior at m-axial Lifshitz points: Field-theory analysis and epsilon-expansion results," Phys. Rev. B 62, 12338 DOI: http://dx.doi.org/10.1103/PhysRevB.62.12338
0163-1829
http://hdl.handle.net/10919/47819
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.62.12338
https://doi.org/10.1103/PhysRevB.62.12338
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/732792024-03-13T14:09:59Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
NuTeV anomaly, lepton universality, and nonuniversal neutrino-gauge couplings
Physical Review D
Loinaz, William
Okamura, Naotoshi
Rayyan, S.
Takeuchi, Tatsu
Wijewardhana, L. C. R.
Physics
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
FERMION PAIR PRODUCTION
RADIATIVE-CORRECTIONS
MUON-ELECTRON
TAU-DECAYS
ANTIMUONIUM CONVERSION
BRANCHING FRACTIONS
PARTICLE PHYSICS
QED CORRECTIONS
STANDARD MODEL
GENERAL-THEORY
Published version
2016-10-18T23:56:52Z
2016-10-18T23:56:52Z
2004-12-01
Article - Refereed
1550-7998
http://hdl.handle.net/10919/73279
https://doi.org/10.1103/PhysRevD.70.113004
70
11
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000226054700022&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
? - ? (12) page(s)
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/1165182023-10-21T07:12:44Zcom_10919_24211com_10919_5553col_10919_24287
A JWST Near- and Mid-infrared Nebular Spectrum of the Type Ia Supernova 2021aefx
Astrophysical Journal Letters
Kwok, Lindsey A.
Jha, Saurabh W.
Temim, Tea
Fox, Ori D.
Larison, Conor
Camacho-Neves, Yssavo
Brenner Newman, Max J.
Pierel, Justin D. R.
Foley, Ryan J.
Andrews, Jennifer E.
Badenes, Carles
Barna, Barnabas
Bostroem, K. Azalee
Deckers, Maxime
Floers, Andreas
Garnavich, Peter
Graham, Melissa L.
Graur, Or
Hosseinzadeh, Griffin
Howell, D. Andrew
Hughes, John P.
Johansson, Joel
Kendrew, Sarah
Kerzendorf, Wolfgang E.
Maeda, Keiichi
Maguire, Kate
McCully, Curtis
O'Brien, John T.
Rest, Armin
Sand, David J.
Shahbandeh, Melissa
Strolger, Louis-Gregory
Szalai, Tamas
Ashall, Chris
Baron, E.
Burns, Chris R.
DerKacy, James M.
Evans, Tyco Mera
Fisher, Alec
Galbany, Lluis
Hoeflich, Peter
Hsiao, Eric
de Jaeger, Thomas
Karamehmetoglu, Emir
Krisciunas, Kevin
Kumar, Sahana
Lu, Jing
Maund, Justyn
Mazzali, Paolo A.
Medler, Kyle
Morrell, Nidia
Phillips, Mark. M.
Shappee, Benjamin J.
Stritzinger, Maximilian
Suntzeff, Nicholas
Telesco, Charles
Tucker, Michael
Wang, Lifan
chandrasekhar mass models
sn 2014j
delayed-detonation
explosive nucleosynthesis
space-telescope
extinction
spectropolarimetry
spectroscopy
instrument
asymmetry
We present JWST near-infrared (NIR) and mid-infrared (MIR) spectroscopic observations of the nearby normal Type Ia supernova (SN) SN 2021aefx in the nebular phase at +255 days past maximum light. Our Near Infrared Spectrograph (NIRSpec) and Mid Infrared Instrument observations, combined with ground-based optical data from the South African Large Telescope, constitute the first complete optical+NIR+MIR nebular SN Ia spectrum covering 0.3-14 mu m. This spectrum unveils the previously unobserved 2.5-5 mu m region, revealing strong nebular iron and stable nickel emission, indicative of high-density burning that can constrain the progenitor mass. The data show a significant improvement in sensitivity and resolution compared to previous Spitzer MIR data. We identify numerous NIR and MIR nebular emission lines from iron-group elements as well as lines from the intermediate-mass element argon. The argon lines extend to higher velocities than the iron-group elements, suggesting stratified ejecta that are a hallmark of delayed-detonation or double-detonation SN Ia models. We present fits to simple geometric line profiles to features beyond 1.2 mu m and find that most lines are consistent with Gaussian or spherical emission distributions, while the [Ar iii] 8.99 mu m line has a distinctively flat-topped profile indicating a thick spherical shell of emission. Using our line profile fits, we investigate the emissivity structure of SN 2021aefx and measure kinematic properties. Continued observations of SN 2021aefx and other SNe Ia with JWST will be transformative to the study of SN Ia composition, ionization structure, density, and temperature, and will provide important constraints on SN Ia progenitor and explosion models.
NASA [NAS 5-03127, JWST-GO-02072.001]; JWST program [02072]; Rutgers University [2022-1-MLT-004]; NASA FINESST fellowship [80NSSC22K1599]; NKFIH/OTKA grant of the National Research, Development and Innovation (NRDI) Office of Hungary [FK-134432]; Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences; New National Excellence Program of the Ministry for Innovation and Technology of Hungary from the source of NRDI Fund [UNKP-22-5]; NSF [AST-1821987, 1813466, 1908972, 2108032]; Heising-Simons Foundation [2020-1864]; Japan Society for the Promotion of Science (JSPS) KAKENHI grants [JP18H05223, JP20H00174]; Spanish Ministerio de Ciencia e Innovacion (MCIN), the Agencia Estatal de Investigacion (AEI); European Social Fund (ESF) "Investing in your future" under the 2019 Ramon y Cajal program [RYC2019-027683-I, PID2020-115253GA-I00]; Centro Superior de Investigaciones Cientificas (CSIC) under the PIE project [20215AT016]; program Unidad de Excelencia Maria de Maeztu [CEX2020-001058-M]; EU H2020 ERC grant [758638]; George A. and Margaret M. Downsbrough bequest; Villum FONDEN [28021]; Independent Research Fund Denmark (IRFD) [8021-00170B]; National Science Foundation Graduate Research Fellowship [DGE-2233066]; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (ERC) [885281]; Direct For Mathematical & Physical Scien; Division Of Astronomical Sciences [2108032] Funding Source: National Science Foundation
Published version
We thank Shelly Meyett for her consistently excellent work scheduling these JWST observations, Greg Sloan for assistance with the MIRI LRS wavelength solution correction, and Glenn Wahlgren for help with the NIRSpec observations.; This work is based on observations made with the NASA/ESA/CSA JWST. The data were obtained from the Mikulski Archive for Space Telescopes at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-03127 for JWST. These observations are associated with JWST program No. 02072. Support for this program at Rutgers University was provided by NASA through grant JWST-GO-02072.001.; The SALT data presented here were obtained with Rutgers University program 2022-1-MLT-004 (PI: Jha). We are grateful to SALT Astronomer Rosalind Skelton for taking these observations.; L.A.K. acknowledges support by NASA FINESST fellowship 80NSSC22K1599.; T.S. is supported by the NKFIH/OTKA FK-134432 grant of the National Research, Development and Innovation (NRDI) Office of Hungary, the Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences, and the New National Excellence Program (UNKP-22-5) of the Ministry for Innovation and Technology of Hungary from the source of NRDI Fund.; Time-domain research by the University of Arizona team and D.J.S. is supported by NSF grants AST-1821987, 1813466, 1908972, and 2108032, and by the Heising-Simons Foundation under grant No. 2020-1864.; K.M. acknowledges support from the Japan Society for the Promotion of Science (JSPS) KAKENHI grants JP18H05223 and JP20H00174.; L.G. acknowledges financial support from the Spanish Ministerio de Ciencia e Innovacion (MCIN), the Agencia Estatal de Investigacion (AEI) 10.13039/501100011033, and the European Social Fund (ESF) "Investing in your future" under the 2019 Ramon y Cajal program RYC2019-027683-I and the PID2020-115253GA-I00 HOSTFLOWS project, from Centro Superior de Investigaciones Cientificas (CSIC) under the PIE project 20215AT016, and the program Unidad de Excelencia Maria de Maeztu CEX2020-001058-M.; K.M. and M.D. are funded by the EU H2020 ERC grant No. 758638.; J.P.H. acknowledges support from the George A. and Margaret M. Downsbrough bequest.; The Aarhus supernova group is funded in part by an Experiment grant (No. 28021) from the Villum FONDEN, and by a project (1) grant (No. 8021-00170B) from the Independent Research Fund Denmark (IRFD).; C.L. acknowledges support from the National Science Foundation Graduate Research Fellowship under grant No. DGE-2233066.; A.F. acknowledges support by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (ERC advanced grant KILO-NOVA No. 885281).
2023-10-20T14:38:41Z
2023-10-20T14:38:41Z
2023-02
Article - Refereed
Text
2041-8205
L3
http://hdl.handle.net/10919/116518
https://doi.org/10.3847/2041-8213/acb4ec
944
1
2041-8213
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
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IOP Publishing
oai:vtechworks.lib.vt.edu:10919/931662020-10-22T03:36:05Zcom_10919_24211com_10919_5553col_10919_24287
Complete fourier direct magnetic resonance imaging (CFD-MRI) for diffusion MRI
Frontiers In Integrative Neuroscience
Ozcan, Alpay
Physics
magnetic resonance imaging
diffusion weighted imaging
fourier transform
The foundation for an accurate and unifying Fourier-based theory of diffusion weighted magnetic resonance imaging (DW MRI) is constructed by carefully re-examining the first principles of DW MRI signal formation and deriving its mathematical model from scratch. The derivations are specifically obtained for DW MRI signal by including all of its elements (e.g., imaging gradients) using complex values. Particle methods are utilized in contrast to conventional partial differential equations approach. The signal is shown to be the Fourier transform of the joint distribution of number of the magnetic moments (at a given location at the initial time) and magnetic moment displacement integrals. In effect, the k-space is augmented by three more dimensions, corresponding to the frequency variables dual to displacement integral vectors. The Joint distribution function is recovered by applying the Fourier transform to the complete high-dimensional data set. In the process, to obtain a physically meaningful real valued distribution function, phase corrections are applied for the re-establishment of Hermitian symmetry in the signal. Consequently, the method is fully unconstrained and directly presents the distribution of displacement integrals without any assumptions such as symmetry or Markovian property. The joint distribution function is visualized with isosurfaces, which describe the displacement integrals, overlaid on the distribution map of the number of magnetic moments with low mobility. The model provides an accurate description of the molecular motion measurements via DVV MRI. The improvement of the characterization of tissue microstructure leads to a better localization, detection and assessment of biological properties such as white matter integrity. The results are demonstrated on the experimental data obtained from an ex vivo baboon brain.
NINDS NIH HHS [P01 NS059560]; NCI NIH HHS [U24 CA083060]
2019-08-16T14:07:11Z
2019-08-16T14:07:11Z
2013
Article - Refereed
Text
http://hdl.handle.net/10919/93166
https://doi.org/10.3389/fnint.2013.00018
7
23596401
1662-5145
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
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application/pdf
oai:vtechworks.lib.vt.edu:10919/247262022-04-05T02:36:54Zcom_10919_24211com_10919_5553col_10919_24287
Precision measurement of the neutron beta-decay asymmetry
Physical Review C
Mendenhall, M. P.
Pattie, R. W.
Bagdasarova, Y.
Berguno, D. B.
Broussard, L. J.
Carr, Rachel E.
Currie, S.
Ding, X.
Filippone, B. W.
Garcia, A.
Geltenbort, P.
Hickerson, K. P.
Hoagland, J.
Holley, A. T.
Hong, R.
Ito, T. M.
Knecht, A.
Liu, C. Y.
Liu, J. L.
Makela, M.
Mammei, R. R.
Martin, J. W.
Melconian, D.
Moore, S. D.
Morris, C. L.
Galvan, A. P.
Picker, R.
Pitt, M. L.
Plaster, B.
Ramsey, J. C.
Rios, R.
Saunders, A.
Seestrom, S. J.
Sharapov, E. I.
Sondheim, W. E.
Tatar, E.
Vogelaar, R. Bruce
VornDick, B.
Wrede, C.
Young, A. R.
Zeck, B. A.
Ucna Collaboration
Physics
Virginia Tech
multiwire proportional chamber
polarized neutrons
low-energy
spectrometer
Simulation
tests
Physics
A new measurement of the neutron beta-decay asymmetry A(0) has been carried out by the UCNA Collaboration using polarized ultracold neutrons (UCNs) from the solid deuterium UCN source at the Los Alamos Neutron Science Center. Improvements in the experiment have led to reductions in both statistical and systematic uncertainties leading to A(0) = -0.11954(55)(stat)(98)(syst), corresponding to the ratio of axial-vector to vector coupling lambda = g(A)/g(V) = -1.2756(30).
US Department of Energy, Office of Nuclear Physics DE-FG02-08ER41557
National Science Foundation NSF-0855538, NSF-1205977, NSF-0653222
Los Alamos National Laboratory LDRD program
LANSCE division of Los Alamos National Laboratory
AOT division of Los Alamos National Laboratory
2013-12-18T19:26:51Z
2013-12-18T19:26:51Z
2013-03-25
2013-12-11
Article - Refereed
Mendenhall, M. P. ; Pattie, R. W., Jr. ; Bagdasarova, Y. ; et al., Mar 25, 2013. “Precision measurement of the neutron beta-decay asymmetry,” PHYSICAL REVIEW C 87(3): 032501. DOI: 10.1103/PhysRevC.87.032501
0556-2813
http://hdl.handle.net/10919/24726
http://prc.aps.org/pdf/PRC/v87/i3/e032501
https://doi.org/10.1103/PhysRevC.87.032501
en_US
In Copyright
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application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/469612020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Rotational matched spatial filter for biological pattern recognition
Applied Optics
Fujii, H.
Almeida, S. P.
Dowling, J. E.
Physics
Virginia Tech
Randomly oriented microbiological patterns are recognized by rotating a matched spatial filter with an optical wedge prism. The filter is made from a composite input pattern with various sized objects to cover wider ranges of size variation in a species to be identified.
National Science Foundation (ASRA division under grant ENV-7710184)
2014-04-04T15:12:27Z
2014-04-04T15:12:27Z
1980-06
2014-02-24
Article - Refereed
Hitoshi Fujii, Silverio P. Almeida, and James E. Dowling, "Rotational matched spatial filter for biological pattern recognition," Appl. Opt. 19, 1190-1195 (1980). doi: 10.1364/ao.19.001190
0003-6935
http://hdl.handle.net/10919/46961
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-19-7-1190
https://doi.org/10.1364/ao.19.001190
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
Optical Society of America
oai:vtechworks.lib.vt.edu:10919/731512024-03-13T14:10:09Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Unusual water flux in the extracellular polysaccharide of the cyanobacterium Nostoc commune
Applied And Environmental Microbiology
Shaw, Eric
Hill, Donna René
Brittain, Nicole
Wright, Debbie J.
Täuber, Uwe C.
Marand, Hervé
Helm, Richard F.
Potts, Malcolm
Physics
Biotechnology & Applied Microbiology
Microbiology
DESICCATION TOLERANCE
RESISTANT
The speed of water uptake by desiccated <i>Nostoc commune</i> was found to depend upon the duration of desiccation. The rehydration of desiccated colonies led to marked, time-dependent changes in structure and ultrastructure and fluctuations in the composition of the transcriptome. Physical evaporative water loss is an active process that was influenced by inhibitors of transcription and translation.
Published version
2016-10-02T16:28:12Z
2016-10-02T16:28:12Z
2003-09-01
Article - Refereed
0099-2240
http://hdl.handle.net/10919/73151
https://doi.org/10.1128/AEM.69.9.5679-5684.2003
69
9
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000185437000078&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
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5679 - 5684 (6) page(s)
application/pdf
American Society for Microbiology
oai:vtechworks.lib.vt.edu:10919/523832020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Magnetic tricritical behavior of ethylammonium tetrachlorocuprate
Journal of Applied Physics
Long, Jerome R.
Haines, Donald N.
Drumheller, John E.
Physics
Virginia Tech. Physics Department
Montana State University. Department of Physics
Antiferromagnetism
Phase diagrams
Alternating current power transmission
Magnetic anisotropy
Magnetic susceptibilities
In order to investigate the prediction by Tuthill that a tricritical point may exist in the phase diagram of spin_flop antiferromagnets with intermediate anisotropy, an experimental reexamination of the phase diagram of the quasi_two_dimensional system (C2H5NH3)2CuCl4 was performed. Measurements were made of the differential magnetic susceptibility,d M/d H, vs dc field and temperature in the (10 K, 100 Oe) region of the proposed tricritical point. A low amplitude, low frequency, ac biphase SQUID susceptometer was used. The sample was a single crystal with field along the antiferromagnetic easy (orthorhombic a_axis) direction. The data show some evidence of the existence of at least one tricritical point, but the results are not definitive.
National Science Foundation
2015-05-21T15:46:25Z
2015-05-21T15:46:25Z
1988-04-15
2015-04-24
Article - Refereed
Text
Long, J. R., Haines, D. N., Drumheller, J. E. (1988). Magnetic tricritical behavior of ethylammonium tetrachlorocuprate. Journal of Applied Physics, 63(8), 3031-3033. doi: 10.1063/1.340883
0021-8979
http://hdl.handle.net/10919/52383
http://scitation.aip.org/content/aip/journal/jap/63/8/10.1063/1.340883
https://doi.org/10.1063/1.340883
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
4 pages
application/pdf
application/pdf
American Institute of Physics
oai:vtechworks.lib.vt.edu:10919/732652024-03-13T14:09:59Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Choice of dispersion relation to calculate the QCD correction to Gamma(H->l(+)l(-))
Physical Review D
Takeuchi, Tatsu
Grant, Aaron K.
Worah, Mihir P.
Physics
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
VACUUM-POLARIZATION FUNCTIONS
WIDTH
We use the Operator Product Expansion (OPE) of quark vacuum polarization functions to show that the dispersion relation of Kniehl and Sirlin will yield the correct result to all orders in αs when applied to the QCD correction to the leptonic decay width of the Higgs boson.
Published version
2016-10-18T23:49:01Z
2016-10-18T23:49:01Z
1996-02-01
Article - Refereed
0556-2821
http://hdl.handle.net/10919/73265
https://doi.org/10.1103/PhysRevD.53.1548
53
3
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1996TV64700055&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
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1548 - 1552 (5) page(s)
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/1171472024-03-12T15:57:56Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Measurement of CP Violation in B0 → KS0 π0 Decays at Belle II
Physical Review Letters
Adachi, I.
Adamczyk, K.
Aggarwal, L.
Ahmed, H.
Aihara, H.
Akopov, N.
Aloisio, A.
Anh Ky, N.
Asner, D. M.
Atmacan, H.
Aushev, T.
Aushev, V.
Aversano, M.
Babu, V.
Bae, H.
Bahinipati, S.
Bambade, P.
Banerjee, S.
Barrett, M.
Baudot, J.
Bauer, M.
Baur, A.
Beaubien, A.
Becker, J.
Behera, P. K.
Bennett, J. V.
Bertacchi, V.
Bertemes, M.
Bertholet, E.
Bessner, M.
Bettarini, S.
Bhuyan, B.
Bianchi, F.
Bilka, T.
Biswas, D.
Bodrov, D.
Bondar, A.
Borah, J.
Bozek, A.
Bračko, M.
Branchini, P.
Briere, R. A.
Browder, T. E.
Budano, A.
Bussino, S.
Campajola, M.
Cao, L.
Casarosa, G.
Cecchi, C.
Cerasoli, J.
Chang, P.
Cheaib, R.
Cheema, P.
Chekelian, V.
Chen, C.
Cheon, B. G.
Chilikin, K.
Chirapatpimol, K.
Cho, H. E.
Cho, K.
Cho, S. J.
Choi, S. K.
Choudhury, S.
Cochran, J.
Corona, L.
Cremaldi, L. M.
Das, S.
Dattola, F.
De La Cruz-Burelo, E.
De La Motte, S. A.
De Marino, G.
De Nuccio, M.
De Pietro, G.
De Sangro, R.
Destefanis, M.
De Yta-Hernandez, A.
Dhamija, R.
Di Canto, A.
Di Capua, F.
Dingfelder, J.
DoleŽal, Z.
Domínguez Jiménez, I.
Dong, T. V.
Dorigo, M.
Dort, K.
Dreyer, S.
Dubey, S.
Dujany, G.
Ecker, P.
Eliachevitch, M.
Feichtinger, P.
Ferber, T.
Ferlewicz, D.
Fillinger, T.
Finck, C.
Finocchiaro, G.
Fodor, A.
Forti, F.
Fulsom, B. G.
Gabrielli, A.
Belle II Collaboration
5106 Nuclear and Plasma Physics
5107 Particle and High Energy Physics
4902 Mathematical Physics
49 Mathematical Sciences
51 Physical Sciences
40 Engineering
We report a measurement of the CP-violating parameters C and S in B0→KS0π0 decays at Belle II using a sample of 387×106 BB¯ events recorded in e+e- collisions at a center-of-mass energy corresponding to the ϒ(4S) resonance. These parameters are determined by fitting the proper decay-time distribution of a sample of 415 signal events. We obtain C=-0.04-0.15+0.14±0.05 and S=0.75-0.23+0.20±0.04, where the first uncertainties are statistical and the second are systematic.
Published version
2023-12-08T18:20:01Z
2023-12-08T18:20:01Z
2023-09-15
2023-09-14
Article - Refereed
Journal Article
111803 (Article number)
0031-9007
https://hdl.handle.net/10919/117147
https://doi.org/10.1103/PhysRevLett.131.111803
131
11
Piilonen, Leo [0000-0001-6836-0748]
37774261
1079-7114
eng
https://www.ncbi.nlm.nih.gov/pubmed/37774261
http://dx.doi.org/10.1103/physrevlett.131.111803
In Copyright
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Pages 111803
Print
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/731162024-03-13T14:10:09Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Vortex washboard voltage noise in type-II superconductors
European Physical Journal B
Bullard, Thomas J. III
Das, Jayajit
Daquila, George L.
Täuber, Uwe C.
Physics
Physics, Condensed Matter
Physics
HIGH-TEMPERATURE SUPERCONDUCTORS
BOSON LOCALIZATION
DRIVEN LATTICES
MAGNETIC-FLUX
GLASS
PHASE
INTERFERENCE
TRANSITIONS
SIMULATION
VORTICES
In order to characterize flux flow through disordered type-II superconductors, we investigate the effects of columnar and point defects on the vortex velocity / voltage power spectrum in the driven non-equilibrium steady state. We employ three-dimensional Metropolis Monte Carlo simulations to measure relevant physical observables including the force-velocity / current-voltage (I-V) characteristics, vortex spatial arrangement and structure factor, and mean flux line radius of gyration. Our simulation results compare well to earlier findings and physical intuition. We focus specifically on the voltage noise power spectra in conjunction with the vortex structure factor in the presence of weak columnar and point pinning centers. We investigate the vortex washboard noise peak and associated higher harmonics, and show that the intensity ratios of the washboard harmonics are determined by the strength of the material defects rather than the type of pins present. Through varying columnar defect lengths and pinning strengths as well as magnetic flux density we further explore the effect of the material defects on vortex transport. It is demonstrated that the radius of gyration displays quantitatively unique features that depend characteristically on the type of material defects present in the sample.
Published version
2016-09-30T13:12:09Z
2016-09-30T13:12:09Z
2008-10-01
Article - Refereed
1434-6028
http://hdl.handle.net/10919/73116
https://doi.org/10.1140/epjb/e2008-00358-7
65
4
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000260770900001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
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469 - 484 (16) page(s)
application/pdf
Springer
oai:vtechworks.lib.vt.edu:10919/477002020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Bohm-Aharonov experiment without an electron microscope
Physical Review A
Li, M. C.
Physics
Virginia Tech
A new-type Bohm-Aharonov experiment is proposed. The experiment can be carried out in a large scale without the help of an electron microscope.
2014-04-25T14:12:37Z
2014-04-25T14:12:37Z
1978-08
2014-04-22
Article - Refereed
Li, M. C., "Bohm-Aharonov experiment without an electron microscope," Phys. Rev. A 18, 773 (1978) DOI: http://dx.doi.org/10.1103/PhysRevA.18.773
1050-2947
http://hdl.handle.net/10919/47700
http://journals.aps.org/pra/abstract/10.1103/PhysRevA.18.773
https://doi.org/10.1103/PhysRevA.18.773
en_US
In Copyright
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application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/816472024-03-13T14:09:17Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Search for coherent charged pion production in neutrino-carbon interactions
Physical Review Letters
Hasegawa, M.
Aliu, E.
Andringa, S.
Aoki, S.
Argyriades, J.
Asakura, K.
Ashie, R.
Berns, H.
Bhang, H.
Blondel, A.
Borghi, S.
Bouchez, J.
Burguet-Castell, J.
Casper, D.
Cavata, C.
Cervera, A.
Chen, S. M.
Cho, K. O.
Choi, J. H.
Dore, U.
Espinal, X.
Fechner, M.
Fernandez, E.
Fukuda, Y.
Gomez-Cadenas, J. J.
Gran, R.
Hara, T.
Hasegawa, T.
Hayashi, K.
Hayato, Y.
Helmer, R. L.
Hill, J.
Hiraide, K.
Hosaka, J.
Ichikawa, A. K.
Iinuma, M.
Ikeda, A.
Inagaki, T.
Ishida, T.
Ishihara, K.
Ishii, T.
Ishitsuka, M.
Itow, Y.
Iwashita, T.
Jang, H. I.
Jeon, E. J.
Jeong, I. S.
Joo, K. K.
Jover, G.
Jung, C. K.
Kajita, T.
Kameda, J.
Kaneyuki, K.
Kato, I.
Kearns, E.
Kerr, D.
Kim, C. O.
Khabibullin, M.
Khotjantsev, A.
Kielczewska, D.
Kim, J. Y.
Kim, S. B.
Kitching, P.
Kobayashi, K.
Kobayashi, T.
Konaka, A.
Koshio, Y.
Kropp, W.
Kubota, J.
Kudenko, Y.
Kuno, Y.
Kutter, T.
Learned, J.
Likhoded, S.
Lim, I. T.
Loverre, P. F.
Ludovici, L.
Maesaka, H.
Mallet, J.
Mariani, Camillo
Maruyama, T.
Matsuno, S.
Matveev, V. A.
Mauger, C.
McConnel, K.
McGrew, C.
Mikheyev, S.
Minamino, A.
Mine, S.
Mineev, O.
Mitsuda, C.
Miura, M.
Moriguchi, Y.
Morita, T.
Moriyama, S.
Nakadaira, T.
Nakahata, M.
Nakamura, K.
Nakano, I.
Nakaya, T.
Nakayama, S.
Namba, T.
Nambu, R.
Nawang, S.
Nishikawa, K.
Nitta, K.
Nova, F.
Novella, P.
Obayashi, Y.
Okada, A.
Okumura, K.
Oser, S. M.
Oyama, Y.
Pac, M. Y.
Pierre, F.
Rodriguez, A.
Saji, C.
Sakuda, M.
Sanchez, F.
Sarrat, A.
Sasaki, T.
Sato, H.
Scholberg, K.
Schroeter, R.
Sekiguchi, M.
Sharkey, E.
Shiozawa, M.
Shiraishi, K. K.
Sitjes, G.
Smy, M.
Sobel, H.
Stone, J.
Sulak, L.
Suzuki, A.
Suzuki, Y.
Takahashi, T.
Takenaga, Y.
Takeuchi, Y.
Taki, K.
Takubo, Y.
Tamura, N.
Tanaka, M.
Terri, R.
T'Jampens, S.
Tornero-Lopez, A.
Totsuka, Y.
Ueda, S.
Vagins, M. R.
Whitehead, L.
Walter, C. W.
Wang, W.
Wilkes, R. J.
Yamada, S.
Yamamoto, S.
Yanagisawa, C.
Yershov, N.
Yokoyama, H.
Yokoyama, M.
Yoo, J.
Yoshida, M.
Zalipska, J.
Physics
Physics, Multidisciplinary
Physics
CROSS-SECTIONS
GEV REGION
RESONANCE
DETECTOR
NUCLEI
MESONS
We report the result from a search for charged-current coherent pion production induced by muon neutrinos with a mean energy of 1.3 GeV. The data are collected with a fully active scintillator
detector in the K2K long-baseline neutrino oscillation experiment. No evidence for coherent pion production is observed and an upper limit of 0.60×10<sup>−2</sup> is set on the cross section ratio of coherent pion production to the total charged-current interaction at 90% confidence level. This is the first experimental limit for coherent charged pion production in the energy region of a few GeV.
Published version
2018-01-10T01:35:13Z
2018-01-10T01:35:13Z
2005-12-16
Article - Refereed
0031-9007
http://hdl.handle.net/10919/81647
https://doi.org/10.1103/PhysRevLett.95.252301
95
25
Mariani, C [0000-0003-3284-4681]
1079-7114
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000234118500017&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
? - ? (5) page(s)
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/752392024-03-12T15:59:10Zcom_10919_5com_10919_25799com_10919_24722com_10919_24211com_10919_5553com_10919_18738com_10919_5539col_10919_70873col_10919_24723col_10919_23145col_10919_24287
Transient pulses from exploding primordial black holes as a signature of an extra dimension
Journal of Cosmology and Astroparticle Physics
Kavic, Michael
Simonetti, John H.
Cutchin, Sean E.
Ellingson, Steven W.
Patterson, Cameron D.
Institute for Particle, Nuclear and Astronomical Sciences (IPNAS)
Electrical and Computer Engineering
Physics
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
black holes
extra dimensions
quantum gravity phenomenology
GAMMA-RAYS
P-BRANES
STRINGS
PHYSICS
BURSTS
SEARCH
INSTABILITY
RELATIVITY
HIERARCHY
EMISSION
An evaporating black hole in the presence of an extra spatial dimension would undergo an explosive phase of evaporation. We show that such an event, involving a primordial black hole, can produce a detectable, distinguishable electromagnetic pulse, signaling the existence of an extra dimension of size L ∼ 10<sup>−18</sup> − 10<sup>−20</sup> m. We derive a generic relationship between the Lorentz factor of a pulse-producing “fireball” and the TeV energy scale. For an ordinary toroidally compactified extra dimension, transient radio-pulse searches probe the electroweak energy scale (∼0.1 TeV), enabling comparison with the Large Hadron Collider.
Published version
2017-03-04T14:30:30Z
2017-03-04T14:30:30Z
2008-11-01
Article - Refereed
Text
1475-7516
http://hdl.handle.net/10919/75239
https://doi.org/10.1088/1475-7516/2008/11/017
11
Ellingson, SW [0000-0001-8622-7377]
en
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000261260200008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
? - ? (10) page(s)
application/pdf
application/pdf
IOP
oai:vtechworks.lib.vt.edu:10919/1181772024-03-14T14:39:52Zcom_10919_5com_10919_25799com_10919_86665com_10919_24211com_10919_5553com_10919_51731com_10919_5478com_10919_23261com_10919_5539col_10919_70873col_10919_86666col_10919_51732col_10919_23262col_10919_24287
Inducing stratification of colloidal mixtures with a mixed binary solvent
Soft Matter
Liu, Binghan
Grest, Gary S.
Cheng, Shengfeng
Molecular dynamics simulations are used to demonstrate that a binary solvent can be used to stratify colloidal mixtures when the suspension is rapidly dried. The solvent consists of two components, one more volatile than the other. When evaporated at high rates, the more volatile component becomes depleted near the evaporation front and develops a negative concentration gradient from the bulk of the mixture to the liquid-vapor interface while the less volatile solvent is enriched in the same region and exhibit a positive concentration gradient. Such gradients can be used to drive a binary mixture of colloidal particles to stratify if one is preferentially attracted to the more volatile solvent and the other to the less volatile solvent. During solvent evaporation, the fraction of colloidal particles preferentially attracted to the less volatile solvent is enhanced at the evaporation front, whereas the colloidal particles having stronger attractions with the more volatile solvent are driven away from the interfacial region. As a result, the colloidal particles show a stratified distribution after drying, even if the two colloids have the same size.
Submitted version
2024-02-27T13:28:29Z
2024-02-27T13:28:29Z
2023-12-06
Article - Refereed
Article
Journal
Text
1744-683X
https://hdl.handle.net/10919/118177
https://doi.org/10.1039/d3sm01192e
19
47
Cheng, Shengfeng [0000-0002-6066-2968]
37997155
1744-6848
en
https://www.ncbi.nlm.nih.gov/pubmed/37997155
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
Pages 9195-9205
11 page(s)
application/pdf
application/pdf
Royal Society of Chemistry
oai:vtechworks.lib.vt.edu:10919/476982020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Convergent methods for calculating thermodynamic Green functions
Physical Review A
Bowen, Samuel P.
Williams, Clayton D.
Mancini, Jay D.
Physics
Virginia Tech
A convergent method of approximating thermodynamic Green functions is outlined briefly. The method constructs a sequence of approximants which converges independently of the strength of the Hamiltonian's coupling constants. Two new concepts associated with the approximants are introduced: the resolving power of the approximation, and conditional creation (annihilation) operators. These ideas are illustrated on an exactly soluble model and a numerical example. A convergent expression for the scattering rate in a field theory is also derived.
NSF DMR-81-06223
2014-04-25T14:12:37Z
2014-04-25T14:12:37Z
1984-08
2014-04-22
Article - Refereed
Bowen, S. P.;Williams, C. D.; Mancini, J. D., "Convergent methods for calculating thermodynamic Green functions," Phys. Rev. A 30, 932 (1984); DOI: http://dx.doi.org/10.1103/PhysRevA.30.932
1050-2947
http://hdl.handle.net/10919/47698
http://journals.aps.org/pra/abstract/10.1103/PhysRevA.30.932
https://doi.org/10.1103/PhysRevA.30.932
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/750142021-04-27T15:27:13Zcom_10919_5com_10919_25799com_10919_24464com_10919_24211com_10919_5553col_10919_70873col_10919_24465col_10919_24287
Experimental Neutrino Physics: Review and Summary
Link, Jonathan M.
Center for Neutrino Physics
Physics
true (Invited?)
2017-02-13T17:17:13Z
2017-02-13T17:17:13Z
2016-09-22
Conference proceeding
http://hdl.handle.net/10919/75014
The 14th International Workshop on Tau Lepton Physics
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/vnd.openxmlformats-officedocument.presentationml.presentation
oai:vtechworks.lib.vt.edu:10919/478202022-07-03T06:18:38Zcom_10919_24211com_10919_5553col_10919_24287
Critical dynamics at incommensurate phase transitions and NMR relaxation experiments
Physical Review B
Kaufmann, B. A.
Schwabl, Franz
Täuber, Uwe C.
Physics
Virginia Tech
spin-lattice relaxation
quadrupolar perturbed nmr
minimal
renormalization
epsilon-expansion
critical-behavior
goldstone modes
systems
coexistence
ferromagnets
attenuation
physics, condensed matter
We study the critical dynamics of crystals which undergo a second-order phase transition from a high-temperature normal phase to a structurally incommensurate (IC) modulated phase. We give a comprehensive description of the critical dynamics of such systems, e.g., valid for crystals of the A(2)BX(4) family. Using an extended renormalization scheme, we present a framework in which we analyze the phases above and below the critical temperature T-I. Above T-I, the crossover from the critical behavior to the mean-field regime is studied. Specifically, the resulting width of the critical region is investigated. In the IC modulated phase, we consider explicitly the coupling of the order parameter modes to one-loop order. Here the Goldstone anomalies and their effect on measurable quantities are investigated. We show their relation with the postulated phason gap. While the theory can be applied to a variety of experiments, we concentrate on quadrupole-perturbed nuclear magnetic resonance (NMR) experiments. We find excellent agreement with these dynamical measurements and provide answers for some questions that arose from recent results. [S0163-1829(99)03417-7].
Deutsche Forschungsgemeinschaft under Contract No. Schw. 348/6-1,2
Deutsche Forschungsgemeinschaft
2014-05-07T15:36:52Z
2014-05-07T15:36:52Z
1999-05
2014-04-23
Article - Refereed
Kaufmann, B. A.; Schwabl, F.; Tauber, U. C., "Critical dynamics at incommensurate phase transitions and NMR relaxation experiments," Phys. Rev. B 59, 11226 DOI: http://dx.doi.org/10.1103/PhysRevB.59.11226
0163-1829
http://hdl.handle.net/10919/47820
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.59.11226
https://doi.org/10.1103/PhysRevB.59.11226
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/251822022-02-26T22:17:44Zcom_10919_23842com_10919_5553com_10919_24369com_10919_5539com_10919_24211col_10919_23843col_10919_24370col_10919_24287
Ion transport and storage of ionic liquids in ionic polymer conductor network composites
Applied Physics Letters
Liu, Yang
Liu, Sheng
Lin, Junhong
Wang, Dong
Jain, Vaibhav
Montazami, Reza
Heflin, James R.
Li, Jing
Madsen, Louis A.
Zhang, Q. M.
Chemistry
Physics
Materials Science and Engineering
Virginia Tech
Double-layer
Transducers
Capacitors
Actuators
Devices
Cells
Physics
We investigate ion transport and storage of ionic liquids in ionic polymer conductor network composite electroactive devices. Specifically, we show that by combining the time domain electric and electromechanical responses, one can gain quantitative information on transport behavior of the two mobile ions in ionic liquids (i.e., cation and anion) in these electroactive devices. By employing a two carrier model, the total excess ions stored and strains generated by the cations and anions, and their transport times in the nanocomposites can be determined, which all depend critically on the morphologies of the conductor network nanocomposites. (C) 2010 American Institute of Physics. [doi:10.1063/1.3432664]
U.S. Army Research Office_W911NF-07-1-0452
Ionic Liquids in Electro-Active Devices (ILEAD) MURI
NSF CMMI 0709333
2014-01-28T18:00:14Z
2014-01-28T18:00:14Z
2010-05-01
2014-01-17
Article - Refereed
Text
Liu, Yang; Liu, Sheng; Lin, Junhong; et al., "Ion transport and storage of ionic liquids in ionic polymer conductor network composites," Appl. Phys. Lett. 96, 223503 (2010); http://dx.doi.org/10.1063/1.3432664
0003-6951
http://hdl.handle.net/10919/25182
http://scitation.aip.org/content/aip/journal/apl/96/22/10.1063/1.3432664
https://doi.org/10.1063/1.3432664
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
AIP Publishing
oai:vtechworks.lib.vt.edu:10919/252442020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Charged defects in highly emissive organic wide-band-gap semiconductors
Applied Physics Letters
List, E. J. W.
Kim, C. H.
Shinar, J.
Pogantsch, A.
Leising, G.
Graupner, W.
Physics
Virginia Tech
light-emitting-diodes
conjugated polymers
ladder polymer
Physics
A combined photoluminescence (PL) -detected magnetic-resonance (PLDMR) and thermally stimulated current (TSC) study of defects in wide-band-gap para-phenylene-type semiconductors is described. As TSC probes the density of mobile charge carriers after detrapping and PLDMR reveals the influence of trapped charges on the PL, their combination yields the concentration of traps, their energetic position, and their contribution to PL quenching. The reported trap densities, which are 2 x 10(16) for the polymer and 1 x 10(14) cm(-3), for the oligomer, are the lowest reported for para-phenylene-type materials. (C) 2000 American Institute of Physics. [S0003-6951(00)03615-9].
2014-02-03T15:57:14Z
2014-02-03T15:57:14Z
2000-04
2014-01-24
Article - Refereed
List, EJW; Kim, CH; Shinar, J; et al., "Charged defects in highly emissive organic wide-band-gap semiconductors," Appl. Phys. Lett. 76, 2083 (2000); http://dx.doi.org/10.1063/1.126262
0003-6951
http://hdl.handle.net/10919/25244
http://scitation.aip.org/content/aip/journal/apl/76/15/10.1063/1.126262
https://doi.org/10.1063/1.126262
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
AIP Publishing
oai:vtechworks.lib.vt.edu:10919/255542020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
HST/COS observations of galactic high-velocity clouds: four active galactic nucleus sight lines through complex C
Astrophysical Journal
Shull, J. M.
Stevans, M.
Danforth, C.
Penton, S. V.
Lockman, F. J.
Arav, Nahum
Physics
Virginia Tech
galaxy: halo
ism: clouds
ultraviolet: general
ultraviolet-spectroscopic-explorer
hubble-space-telescope
mass-metallicity relation
turbulent mixing layers
milky-way
ionized-gas
interstellar-medium
magellanic stream
o-vi
galaxy
We report ultraviolet spectra of Galactic high-velocity clouds (HVCs) in Complex C, taken by the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope (HST), together with new 21 cm spectra from the Green Bank Telescope. The wide spectral coverage and higher signal-to-noise ratio, compared to previous HST spectra, provide better velocity definition of the HVC absorption, additional ionization species (including high ions), and improved abundances in this halo gas. Complex C has a metallicity of 10%-30% solar and a wide range of ions, suggesting dynamical and thermal interactions with hot gas in the Galactic halo. Spectra in the COS medium-resolution G130M (1133-1468 angstrom) and G160M (1383-1796 angstrom) gratings detect ultraviolet absorption lines from eight elements in low-ionization states (O I, N I, C II, S II, Si II, Al II, Fe II, P II) and three elements in intermediate-and high-ionization states (Si III, Si IV, C IV, N V). Our four active galactic nucleus sight lines toward Mrk 817, Mrk 290, Mrk 876, and PG 1259+593 have high-velocity Hi and Ovi column densities, log N-H (I) = 19.39-20.05 and logN(OVI) = 13.58-14.10, with substantial amounts of kinematically associated photoionized gas. The high-ion abundance ratios are consistent with cooling interfaces between photoionized and collisionally ionized gas: N(C IV)/N(O vi) approximate to 0.3-0.5, N(Si IV)/N(O VI) approximate to 0.05-0.11, N(N V)/N(O VI) approximate to 0.07-0.13, and N(Si IV)/N(Si III) approximate to 0.2.
NASA NNX08AC146, NAS5-98043, NNX07-AG77G
NSF AST07-07474
2014-02-25T13:57:05Z
2014-02-25T13:57:05Z
2011-10
2014-02-05
Article - Refereed
J. Michael Shull et al. 2011. "HST/COS observations of galactic high-velocity clouds: four active galactic nucleus sight lines through complex C," ApJ 739 105 doi:10.1088/0004-637X/739/2/105
0004-637X
http://hdl.handle.net/10919/25554
http://iopscience.iop.org/0004-637X/739/2/105/pdf/0004-637X_739_2_105.pdf
https://doi.org/10.1088/0004-637x/739/2/105
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
IOP Publishing Ltd.
oai:vtechworks.lib.vt.edu:10919/251222022-02-26T22:22:49Zcom_10919_24708com_10919_24211com_10919_5553col_10919_24709col_10919_24287
Position and length operators in a theory with minimal length
Journal of Mathematical Physics
Slawny, Joseph A.
Center for Stochastic Processes in Science and Engineering (CSPISE)
Physics
Virginia Tech
uncertainty relation
quantum-gravity
superstring collisions
spacetime
limitations
Relations between the notions of fundamental and minimal lengths, and duality, in a system with minimal length uncertainty relations are examined. Self-adjoint versions of operators relevant to the problem, and their spectra, are analyzed in detail. (c) 2007 American Institute of Physics.
2014-01-23T13:49:08Z
2014-01-23T13:49:08Z
2007-05
2014-01-25
Article - Refereed
Slawny, J., "Position and length operators in a theory with minimal length," J. Math. Phys. 48, 052108 (2007); http://dx.doi.org/10.1063/1.2423220
0022-2488
http://hdl.handle.net/10919/25122
http://scitation.aip.org/content/aip/journal/jmp/48/5/10.1063/1.2423220
https://doi.org/10.1063/1.2423220
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
AIP Publishing
oai:vtechworks.lib.vt.edu:10919/1171392024-03-13T14:08:54Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Study of the muon decay-in-flight in the τ<SUP>-</SUP> → μ<SUP>-</SUP>(ν)over-bar<sub>μ</sub>ν<sub>t</sub> decay to measure the Michel parameter ξ'
Physical Review D
Bodrov, D.
Pakhlov, P.
Adachi, I.
Aihara, H.
Al Said, S.
Asner, D. M.
Atmacan, H.
Aushev, T.
Ayad, R.
Babu, V.
Banerjee, S. W.
Behera, P.
Belous, K.
Bennett, J.
Bessner, M.
Bhuyan, B.
Bilka, T.
Biswas, D.
Bobrov, A.
Bondar, A.
Borah, J.
Bozek, A.
Bracko, M.
Branchini, P.
Browder, T. E.
Budano, A.
Campajola, M.
Cervenkov, D.
Chang, M. -C.
Cheon, B. G.
Chilikin, K.
Cho, K.
Cho, S. -J.
Choi, S. -K.
Choi, Y.
Choudhury, S.
Cinabro, D.
Das, S.
De Nardo, G.
De Pietro, G.
Dhamija, R.
Di Capua, F.
Dingfelder, J.
Dole, Z.
Dong, T. V.
Epifanov, D.
Ferber, T.
Ferlewicz, D.
Fulsom, B. G.
Gaur, V.
Garmash, A.
Giri, A.
Goldenzweig, P.
Graziani, E.
Greenwald, D.
Gu, T.
Guan, Y.
Gudkova, K.
Hadjivasiliou, C.
Halder, S.
Hayasaka, K.
Hayashii, H.
Hedges, M. T.
Herrmann, D.
Hou, W. -S.
Hsu, C. -L.
Iijima, T.
Inami, K.
Ipsita, N.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Jacobs, W. W.
Jang, E. -J.
Ji, Q. P.
Jia, S.
Jin, Y.
Joo, K. K.
Kalita, D.
Kaliyar, A. B.
Kang, K. H.
Kawasaki, T.
Kiesling, C.
Kim, C. H.
Kim, D. Y.
Kim, K. -H.
Kim, Y. -K.
Kindo, H.
Kinoshita, K.
Kody, P.
Korobov, A.
Korpar, S.
Krizan, P.
Krokovny, P.
Kuhr, T.
Kumar, M.
Kumar, R.
Kumara, K.
Kwon, Y. -J.
Lange, J. S.
Lee, S. C.
Li, J.
Li, L. K.
Li, Y.
Libby, J.
Lieret, K.
Lin, Y. -R.
Liventsev, D.
Ma, Y.
Masuda, M.
Matsuda, T.
Maurya, S. K.
Meier, F.
Merola, M.
Metzner, F.
Miyabayashi, K.
Mizuk, R.
Mohanty, G. B.
Mussa, R.
Nakamura, I.
Nakao, M.
Narwal, D.
Natkaniec, Z.
Natochii, A.
Nayak, L.
Nayak, M.
Nisar, N. K.
Nishida, S.
Ogawa, S.
Ono, H.
Oskin, P.
Pakhlova, G.
Pardi, S.
Park, H.
Park, J.
Park, S. -H.
Patra, S.
Paul, S.
Pedlar, T. K.
Pestotnik, R.
Piilonen, L. E.
Podobnik, T.
Prencipe, E.
Prim, M. T.
Rabusov, A.
Russo, G.
Sandilya, S.
Sangal, A.
Santelj, L.
Savinov, V.
Schnell, G.
Schwanda, C.
Seino, Y.
Senyo, K.
Shan, W.
Shapkin, M.
Sharma, C.
Shiu, J. -G.
Singh, J. B.
Sokolov, A.
Solovieva, E.
Stari, M.
Stottler, Z. S.
Sumihama, M.
Takizawa, M.
Tamponi, U.
Tanida, K.
Tenchini, F.
Tiwary, R.
Trabelsi, K.
Uchida, M.
Uglov, T.
Unno, Y.
Uno, K.
Uno, S.
Vahsen, S. E.
Varner, G.
Vinokurova, A.
Vossen, A.
Wang, D.
Wang, E.
Wang, M. -Z.
Watanuki, S.
Xu, X.
Yabsley, B. D.
Yan, W.
Yang, S. B.
Yelton, J.
Yin, J. H.
Yuan, C. Z.
Yusa, Y.
Zhang, Z. P.
Zhilich, V.
Zhukova, V.
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
MONTE-CARLO
SIMULATION
LIBRARY
TAUOLA
5106 Nuclear and Plasma Physics
5107 Particle and High Energy Physics
5110 Synchrotrons and Accelerators
51 Physical Sciences
We present the first measurement of the Michel parameter ζ′ in the τ-→μ-ν¯μντ decay using the full data sample of 988 fb-1 collected by the Belle detector operating at the KEKB asymmetric energy e+e- collider. The method is based on the reconstruction of the μ-→e-ν¯eνμ decay-in-flight in the Belle central drift chamber and relies on the correlation between muon spin and its daughter electron momentum. We study the main sources of the background that can imitate the signal decay, such as kaon and pion decays-in-flight and charged particle scattering on the detector material. Highly efficient methods of their suppression are developed and applied to select 165 signal-candidate events. We obtain ζ′=0.22±0.94±0.42 where the first uncertainty is statistical, and the second one is systematic. The result is in agreement with the Standard Model prediction of ζ′=1.
Published version
2023-12-08T18:18:55Z
2023-12-08T18:18:55Z
2023-07-11
2023-07-11
Article - Refereed
Article
Journal
ARTN 012003 (Article number)
2470-0010
https://hdl.handle.net/10919/117139
https://doi.org/10.1103/PhysRevD.108.012003
108
1
Piilonen, Leo [0000-0001-6836-0748]
2470-0029
English
http://dx.doi.org/10.1103/physrevd.108.012003
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
16 page(s)
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/1050032023-11-29T19:07:22Zcom_10919_5540com_10919_18738com_10919_5539com_10919_24211com_10919_5553col_10919_71752col_10919_23145col_10919_24287
Precision measurement of electron-electron scattering in GaAs/AlGaAs using transverse magnetic focusing
Nature Communications
Gupta, Adbhut
Heremans, Jean J.
Kataria, Gitansh
Chandra, Mani
Fallahi, S.
Gardner, G.C.
Manfra, M.J.
Electron-electron (e-e) interactions assume a cardinal role in solid-state physics. Quantifying the e-e scattering length is hence critical. In this paper we show that the mesoscopic phenomenon of transverse magnetic focusing (TMF) in two-dimensional electron systems forms a precise and sensitive technique to measure this length scale. Conversely we quantitatively demonstrate that e-e scattering is the predominant effect limiting TMF amplitudes in high-mobility materials. Using high-resolution kinetic simulations, we show that the TMF amplitude at a maximum decays exponentially as a function of the e-e scattering length, which leads to a ready approach to extract this length from the measured TMF amplitudes. The approach is applied to measure the temperature-dependent e-e scattering length in high-mobility GaAs/AlGaAs heterostructures. The simulations further reveal current vortices that accompany the cyclotron orbits - a collective phenomenon counterintuitive to the ballistic transport underlying a TMF setting.
A.G. and J.J.H. acknowledge support by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. DEFG02- 08ER46532 for the conceptualization of the experiments, device fabrication, measurements, data analysis, and interpretation. The MBE growth and transport measurements at Purdue are supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. DESC0020138. S.F., G.C.G., and M.J.M. also acknowledge support from Microsoft Quantum. A.G., J.J.H., G.K., and M.C. acknowledge computational resources (GPU clusters Cascades and NewRiver) and technical support provided by Advanced Research Computing at Virginia Tech. J.J.H. acknowledges a publication subvention from VT OASF.
2021-09-16T13:06:41Z
2021-09-16T13:06:41Z
2021
Article - Refereed
Text
http://hdl.handle.net/10919/105003
https://doi.org/10.1038/s41467-021-25327-7
12
en
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
application/pdf
application/pdf
Nature Research
oai:vtechworks.lib.vt.edu:10919/1166762023-11-21T08:13:32Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Lotka-Volterra predator-prey model with periodically varying carrying capacity
Physical Review E
Swailem, Mohamed
Tauber, Uwe C.
Physics, Fluids & Plasmas
Physics, Mathematical
Physics
LATTICE-GAS MODEL
OSCILLATORY BEHAVIOR
PHASE-TRANSITION
POPULATION
FLUCTUATIONS
COMPETITION
STABILITY
EQUATIONS
DYNAMICS
SYSTEMS
51 Physical Sciences
5103 Classical Physics
40 Engineering
49 Mathematical sciences
We study the stochastic spatial Lotka-Volterra model for predator-prey interaction subject to a periodically varying carrying capacity. The Lotka-Volterra model with on-site lattice occupation restrictions (i.e., finite local carrying capacity) that represent finite food resources for the prey population exhibits a continuous active-to-absorbing phase transition. The active phase is sustained by the existence of spatiotemporal patterns in the form of pursuit and evasion waves. Monte Carlo simulations on a two-dimensional lattice are utilized to investigate the effect of seasonal variations of the environment on species coexistence. The results of our simulations are also compared to a mean-field analysis in order to specifically delineate the impact of stochastic fluctuations and spatial correlations. We find that the parameter region of predator and prey coexistence is enlarged relative to the stationary situation when the carrying capacity varies periodically. The (quasi-)stationary regime of our periodically varying Lotka-Volterra predator-prey system shows qualitative agreement between the stochastic model and the mean-field approximation. However, under periodic carrying capacity-switching environments, the mean-field rate equations predict period-doubling scenarios that are washed out by internal reaction noise in the stochastic lattice model. Utilizing visual representations of the lattice simulations and dynamical correlation functions, we study how the pursuit and evasion waves are affected by ensuing resonance effects. Correlation function measurements indicate a time delay in the response of the system to sudden changes in the environment. Resonance features are observed in our simulations that cause prolonged persistent spatial correlations. Different effective static environments are explored in the extreme limits of fast and slow periodic switching. The analysis of the mean-field equations in the fast-switching regime enables a semiquantitative description of the (quasi-)stationary state.
Accepted version
2023-11-20T13:15:17Z
2023-11-20T13:15:17Z
2023-06-30
2023-11-18T23:41:24Z
Article - Refereed
Article
Journal
Text
ARTN 064144 (Article number)
2470-0045
http://hdl.handle.net/10919/116676
https://doi.org/10.1103/PhysRevE.107.064144
107
6
Tauber, Uwe [0000-0001-7854-2254]
37464668
2470-0053
en
https://www.ncbi.nlm.nih.gov/pubmed/37464668
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
16 page(s)
application/pdf
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/523942020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
The role of coulomb interactions in valence transition: Falicov_Kimball model
Journal of Applied Physics
Bowen, Samuel P.
Lady, S. C.
Physics
Virginia Tech. Physics Department
Correlation functions
Green's function methods
Nonperturbative techniques
Phase transitions
A nonperturbative method of Green function calculation is applied to the Falicov_Kimball model Hamiltonian. In an approximation to first order in the hopping matrix elements, self_consistent solutions for several thermal averages and correlation functions do not show abrupt phase changes as a function of temperature. This treatment suggests that the Coulomb correlation by itself is not the key ingredient to understanding valence transitions.
2015-05-21T15:46:27Z
2015-05-21T15:46:27Z
1984
2015-04-24
Article - Refereed
Text
Bowen, S. P., Lady, S. C. (1984). The role of coulomb interactions in valence transition: Falicov_Kimball model. Journal of Applied Physics, 55(6), 1925-1927. doi: 10.1063/1.333520
0021-8979
http://hdl.handle.net/10919/52394
http://scitation.aip.org/content/aip/journal/jap/55/6/10.1063/1.333520
https://doi.org/10.1063/1.333520
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
4 pages
application/pdf
application/pdf
American Institute of Physics
oai:vtechworks.lib.vt.edu:10919/816512024-03-13T14:09:17Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Experimental study of the atmospheric neutrino backgrounds for p -> e(+)pi(0) searches in water Cherenkov detectors
Physical Review D
Mine, S.
Alcaraz-Aunion, J. L.
Andringa, S.
Aoki, S.
Argyriades, J.
Asakura, K.
Ashie, R.
Berghaus, F.
Berns, H.
Bhang, H.
Blondel, A.
Borghi, S.
Bouchez, J.
Burguet-Castell, J.
Casper, D.
Catala, J.
Cavata, C.
Cervera, A.
Chen, S. M.
Cho, K. O.
Choi, J. H.
Dore, U.
Espinal, X.
Fechner, M.
Fernandez, E.
Fujii, Y.
Fukuda, Y.
Gomez-Cadenas, J. J.
Gran, R.
Hara, T.
Hasegawa, M.
Hasegawa, T.
Hayato, Y.
Helmer, R. L.
Hiraide, K.
Hosaka, J.
Ichikawa, A. K.
Iinuma, M.
Ikeda, A.
Ishida, T.
Ishihara, K.
Ishii, T.
Ishitsuka, M.
Itow, Y.
Iwashita, T.
Jang, H. I.
Jeon, E. J.
Jeong, I. S.
Joo, K. K.
Jover, G.
Jung, C. K.
Kajita, T.
Kameda, J.
Kaneyuki, K.
Kato, I.
Kearns, E.
Kim, C. O.
Khabibullin, M.
Khotjantsev, A.
Kielczewska, D.
Kim, J. Y.
Kim, S. B.
Kitching, P.
Kobayashi, K.
Kobayashi, T.
Konaka, A.
Koshio, Y.
Kropp, W.
Kudenko, Y.
Kuno, Y.
Kurimoto, Y.
Kutter, T.
Learned, J.
Likhoded, S.
Lim, I. T.
Loverre, P. F.
Ludovici, L.
Maesaka, H.
Mallet, J.
Mariani, Camillo
Matsuno, S.
Matveev, V. A.
McConnel, K.
McGrew, C.
Mikheyev, S.
Minamino, A.
Mineev, O.
Mitsuda, C.
Miura, M.
Moriguchi, Y.
Moriyama, S.
Nakadaira, T.
Nakahata, M.
Nakamura, K.
Nakano, I.
Nakaya, T.
Nakayama, S.
Namba, T.
Nambu, R.
Nawang, S.
Nishikawa, K.
Nitta, K.
Nova, F.
Novella, P.
Obayashi, Y.
Okada, A.
Okumura, K.
Oser, S. M.
Oyama, Y.
Pac, M. Y.
Pierre, F.
Rodriguez, A.
Saji, C.
Sakuda, M.
Sanchez, F.
Scholberg, K.
Schroeter, R.
Sekiguchi, M.
Shiozawa, M.
Shiraishi, K. K.
Sitjes, G.
Smy, M.
Sobel, H.
Sorel, M.
Stone, J.
Sulak, L.
Suzuki, A.
Suzuki, Y.
Tada, M.
Takahashi, T.
Takenaga, Y.
Takeuchi, Y.
Taki, K.
Takubo, Y.
Tamura, N.
Tanaka, M.
Terri, R.
T'Jampens, S.
Tornero-Lopez, A.
Totsuka, Y.
Vagins, M. R.
Whitehead, L.
Walter, C. W.
Wang, W.
Wilkes, R. J.
Yamada, S.
Yamada, Y.
Yamamoto, S.
Yanagisawa, C.
Yershov, N.
Yokoyama, H.
Yokoyama, M.
Yoo, J.
Yoshida, M.
Zalipska, J.
Physics
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
NUCLEON-DECAY
SUPER-KAMIOKANDE
PROTON-DECAY
PERFORMANCE
THRESHOLD
FUTURE
PI(0)
The atmospheric neutrino background for proton decay via p → e<sup>+</sup>π<sup>0</sup> in ring imaging water Cherenkov detectors is studied with an artificial accelerator neutrino beam for the first time. In total, 3.14×10<sup>5</sup> neutrino events corresponding to about 10 megaton-years of atmospheric neutrino interactions were collected by a 1,000 ton water Cherenkov detector (KT). The KT charged-current single p0 production data are well reproduced by simulation programs of neutrino and secondary hadronic interactions used in the Super–Kamiokande (SK) proton decay search. The obtained p → e<sup>+</sup>π<sup>0</sup> background rate by the KT data for SK from the atmospheric neutrinos whose energies are below 3 GeV is 1.63 <sup>+0.42</sup><sub>−0.33</sub> (stat.) <sup>+0.45</sup><sub>−0.51</sub> (syst.) (megaton-year)<sup>−1</sup>. This result is also relevant to possible future, megaton-scale water Cherenkov detectors.
Published version
2018-01-10T01:37:00Z
2018-01-10T01:37:00Z
2008-02-01
Article - Refereed
1550-7998
http://hdl.handle.net/10919/81651
https://doi.org/10.1103/PhysRevD.77.032003
77
3
Mariani, C [0000-0003-3284-4681]
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000253764700004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
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? - ? (13) page(s)
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/478852020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Semiclassical interpretation of the spin interference effect observed in square loop arrays of In0.53Ga0.47As/In0.52Al0.48As quantum wells
Physical Review B
Mineshige, S.
Kawabata, S.
Faniel, S.
Waugh, J.
Sekine, Y.
Koga, T.
Physics
Virginia Tech
orbit interaction
transport
rashba
phase
rings
physics, condensed matter
We present a semiclassical interpretation of the time-reversal spin interference (SI) observed in the square loop arrays made of In0.53Ga0.47As quantum wells [T. Koga et al., Phys. Rev. B 74, 041302 (2006)]. The simulated amplitude of SI as a function of the Rashba parameter alpha captured characteristic features in the experimental results if gamma less than or similar to 8 eV angstrom(3) is assumed for the bulk Dresselhaus spin-orbit constant gamma. Our work proves the validity of the semiclassical approach to predict the effect of time-reversal quantum interference in mesoscopic systems and the values of the spin-orbit coefficients recently deduced from the weak localization/antilocalization experiment.
KAKENHI 23360001
Hokkaido Innovation through Nanotechnology Support (HINTS)
Japan Society for the Promotion of Science (JSPS)
2014-05-07T15:37:05Z
2014-05-07T15:37:05Z
2011-12
2014-04-23
Article - Refereed
Mineshige, S.; Kawabata, S.; Faniel, S.; Waugh, J.; Sekine, Y.; Koga, T., "Semiclassical interpretation of the spin interference effect observed in square loop arrays of In0.53Ga0.47As/In0.52Al0.48As quantum wells," Phys. Rev. B 84, 233305 DOI: http://dx.doi.org/10.1103/PhysRevB.84.233305
1098-0121
http://hdl.handle.net/10919/47885
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.84.233305
https://doi.org/10.1103/PhysRevB.84.233305
en_US
In Copyright
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/751612024-03-13T14:09:32Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Mechanical response of a self-avoiding membrane: fold collisions and the birth of conical singularities.
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Mellado, P.
Cheng, S.
Concha, A.
Physics
An elastic membrane that is forced to reside in a container smaller than its natural size will deform and upon further volume reduction eventually crumple. The crumpled state is characterized by the localization of energy in a complex network of highly deformed crescent-like regions joined by line ridges. In this article we study through a combination of experiments, numerical simulations, and analytic approaches the emergence of localized regions of high stretching when a self-avoiding membrane is subject to a severe geometrical constraint. Based on our experimental observations and numerical results we suggest that at moderate packing fraction interlayer interactions produce a response equivalent to that of a thicker membrane that has the shape of the deformed one. We find that new conical dislocations, coined satellite d-cones, appear as the deformed membrane further compactifies. When these satellite d-cones are born, a substantial relaxation of the mechanical response of the membrane is observed. Evidence is found that friction plays a key role in stabilizing the folded structures.
Published version
2017-02-25T19:33:52Z
2017-02-25T19:33:52Z
2011-03
Article - Refereed
Research Support, U.S. Gov't, Non-P.H.S.
http://hdl.handle.net/10919/75161
https://doi.org/10.1103/PhysRevE.83.036607
83
3 Pt 2
1550-2376
eng
http://www.ncbi.nlm.nih.gov/pubmed/21517616
In Copyright
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036607 - ? page(s)
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United States
oai:vtechworks.lib.vt.edu:10919/1171292024-03-13T14:08:54Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Study of e plus e--> sigma 0 sigma over bar 0 and sigma plus sigma over bar - by initial state radiation method at Belle
Physical Review D
Gong, G.
Li, L. K.
Zhang, Y.
Yan, W.
Adachi, I.
Aihara, H.
Al Said, S.
Asner, D. M.
Atmacan, H.
Aushev, T.
Ayad, R.
Babu, V.
Banerjee, Sw
Behera, P.
Belous, K.
Bennett, J.
Bessner, M.
Bhuyan, B.
Bilka, T.
Biswas, D.
Bobrov, A.
Bodrov, D.
Borah, J.
Bozek, A.
Bracko, M.
Branchini, P.
Browder, T. E.
Budano, A.
Campajola, M.
Cervenkov, D.
Chang, M. -C.
Chen, A.
Chen, Y.
Cheon, B. G.
Chilikin, K.
Cho, K.
Cho, S. -J.
Choi, S. -K.
Choi, Y.
Choudhury, S.
Cinabro, D.
Das, S.
De Nardo, G.
De Pietro, G.
Dhamija, R.
Di Capua, F.
Dolezal, Z.
Dong, T.
Epifanov, D.
Ferber, T.
Ferlewicz, D.
Fulsom, B. G.
Garg, R.
Gaur, V.
Garmash, A.
Giri, A.
Goldenzweig, P.
Golob, B.
Graziani, E.
Gudkova, K.
Halder, S.
Hayasaka, K.
Hayashii, H.
Hedges, M. T.
Hou, W. -S.
Hsu, C. -L.
Inami, K.
Ipsita, N.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Jacobs, W. W.
Jang, E. -J.
Jia, S.
Jin, Y.
Joo, K. K.
Kaliyar, A. B.
Kang, K. H.
Kawasaki, T.
Kiesling, C.
Kim, C. H.
Kim, D. Y.
Kim, Y. -K.
Kinoshita, K.
Kodys, P.
Korobov, A.
Korpar, S.
Kovalenko, E.
Krizan, P.
Krokovny, P.
Kumar, R.
Kumara, K.
Kwon, Y. -J.
Lam, T.
Lange, J. S.
Lee, S. C.
Lewis, P.
Li, C. H.
Li, Y.
Li, Y. B.
Li Gioi, L.
Libby, J.
Lieret, K.
Lin, Y. -R.
Liventsev, D.
Luo, T.
Masuda, M.
Matsuda, T.
Matvienko, D.
Maurya, S. K.
Meier, F.
Merola, M.
Metzner, F.
Miyabayashi, K.
Mussa, R.
Nakamura, I.
Nakano, T.
Nakao, M.
Natkaniec, Z.
Natochii, A.
Nayak, L.
Nayak, M.
Nisar, N. K.
Nishida, S.
Ogawa, S.
Ono, H.
Oskin, P.
Pakhlov, P.
Pakhlova, G.
Pardi, S.
Park, H.
Park, J.
Patra, S.
Paul, S.
Pestotnik, R.
Piilonen, L. E.
Podobnik, T.
Prencipe, E.
Prim, M. T.
Rostomyan, A.
Rout, N.
Russo, G.
Sakai, Y.
Sandilya, S.
Santelj, L.
Savinov, V.
Schnell, G.
Schueler, J.
Schwanda, C.
Seino, Y.
Senyo, K.
Sevior, M. E.
Shan, W.
Shapkin, M.
Sharma, C.
Shen, C. P.
Shiu, J. -G.
Shwartz, B.
Simon, F.
Sokolov, A.
Solovieva, E.
Staric, M.
Sumihama, M.
Sumiyoshi, T.
Sutcliffe, W.
Takizawa, M.
Tamponi, U.
Tanida, K.
Tenchini, F.
Uchida, M.
Uehara, S.
Uglov, T.
Unno, Y.
Uno, K.
Uno, S.
Urquijo, P.
Vahsen, S. E.
van Tonder, R.
Varner, G.
Vinokurova, A.
Vossen, A.
Wang, M. -Z.
Wang, X. L.
Watanabe, M.
Watanuki, S.
Werbycka, O.
Won, E.
Xu, X.
Yabsley, B. D.
Yang, S. B.
Yelton, J.
Yin, J. H.
Yuan, C. Z.
Yuan, L.
Zhang, Z. P.
Zhilich, V.
Zhukova, V.
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
P(P)OVER-BAR
E(+)E(-)
5106 Nuclear and Plasma Physics
5107 Particle and High Energy Physics
51 Physical Sciences
The processes e+e-→ς0ς¯0 and e+e-→ς+ς¯- are studied using initial-state-radiation events in a sample of 980 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The cross sections from the mass threshold to 3 GeV/c2 and the effective form factors of ς0 and ς+ are measured. In the charmonium region, we observe the decays J/ψ→ς0ς¯0 and J/ψ→ς+ς¯- and determine the respective branching fractions.
Published version
2023-12-08T18:13:13Z
2023-12-08T18:13:13Z
2023-04-28
2023-04-28
Article - Refereed
Article
Journal
ARTN 072008 (Article number)
2470-0010
https://hdl.handle.net/10919/117129
https://doi.org/10.1103/PhysRevD.107.072008
107
7
Piilonen, Leo [0000-0001-6836-0748]
2470-0029
English
http://dx.doi.org/10.1103/physrevd.107.072008
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14 page(s)
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oai:vtechworks.lib.vt.edu:10919/1177332024-01-30T09:36:59Zcom_10919_5com_10919_25799com_10919_18738com_10919_5539com_10919_24209com_10919_5553com_10919_24211col_10919_70873col_10919_23145col_10919_24267col_10919_24287
Room-Temperature Intrinsic and Extrinsic Damping in Polycrystalline Fe Thin Films
Physical Review B
Wu, Shuang
Smith, David A.
Nakarmi, Prabandha
Rai, Anish
Clavel, Michael
Hudait, Mantu K.
Zhao, Jing
Michel, F. Marc
Mewes, Claudia
Mewes, Tim
Emori, Satoru
cond-mat.mtrl-sci
cond-mat.mes-hall
We examine room-temperature magnetic relaxation in polycrystalline Fe films. Out-of-plane ferromagnetic resonance (FMR) measurements reveal Gilbert damping parameters of $\approx$ 0.0024 for Fe films with thicknesses of 4-25 nm, regardless of their microstructural properties. The remarkable invariance with film microstructure strongly suggests that intrinsic Gilbert damping in polycrystalline metals at room temperature is a local property of nanoscale crystal grains, with limited impact from grain boundaries and film roughness. By contrast, the in-plane FMR linewidths of the Fe films exhibit distinct nonlinear frequency dependences, indicating the presence of strong extrinsic damping. To fit our in-plane FMR data, we have used a grain-to-grain two-magnon scattering model with two types of correlation functions aimed at describing the spatial distribution of inhomogeneities in the film. However, neither of the two correlation functions is able to reproduce the experimental data quantitatively with physically reasonable parameters. Our findings advance the fundamental understanding of intrinsic Gilbert damping in structurally disordered films, while demonstrating the need for a deeper examination of how microstructural disorder governs extrinsic damping.
Accepted version
2024-01-30T13:28:35Z
2024-01-30T13:28:35Z
2021-09-08
Article - Refereed
Article
Text
https://hdl.handle.net/10919/117733
Michel, Frederick [0000-0003-2817-980X]
Hudait, Mantu [0000-0002-9789-3081]
en
https://arxiv.org/abs/2109.03684
http://dx.doi.org/10.1103/PhysRevB.105.174408
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oai:vtechworks.lib.vt.edu:10919/884282020-10-22T03:26:37Zcom_10919_24211com_10919_5553col_10919_24287
T-branes and geometry
Journal of High Energy Physics
Anderson, Lara B.
Heckman, Jonathan J.
Katz, Sheldon
Physics
F-Theory
Differential and Algebraic Geometry
T-branes are a non-abelian generalization of intersecting branes in which the matrix of normal deformations is nilpotent along some subspace. In this paper we study the geometric remnant of this open string data for six-dimensional F-theory vacua. We show that in the dual M-theory / IIA compactification on a smooth Calabi-Yau threefold X-smth, the geometric remnant of T-brane data translates to periods of the three-form potential valued in the intermediate Jacobian of X-smth. Starting from a smoothing of a singular Calabi-Yau, we show how to track this data in singular limits using the theory of limiting mixed Hodge structures, which in turn directly points to an emergent Hitchin-like system coupled to defects. We argue that the physical data of an F-theory compactification on a singular threefold involves specifying both a geometry as well as the remnant of three-form potential moduli and flux which is localized on the discriminant. We give examples of T-branes in compact F-theory models with heterotic duals, and comment on the extension of our results to four-dimensional vacua.
2019-03-13T12:51:49Z
2019-03-13T12:51:49Z
2014-05-19
Article - Refereed
Text
1029-8479
80
http://hdl.handle.net/10919/88428
https://doi.org/10.1007/JHEP05(2014)080
5
en_US
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
application/pdf
application/pdf
Springer
oai:vtechworks.lib.vt.edu:10919/247502022-04-05T02:36:54Zcom_10919_24722com_10919_24211com_10919_5553col_10919_24723col_10919_24287
Constraints on R-parity violating couplings from lepton universality
Physical Review D
Lebedev, O.
Loinaz, William
Takeuchi, Tatsu
Institute for Particle, Nuclear and Astronomical Sciences (IPNAS)
Physics
fermion pair production
supersymmetric models
qed corrections
standard model
oscillation
breaking
Astronomy & Astrophysics
Physics
We analyze the one loop corrections to leptonic W and Z decays in an R-parity violating extension to the minimal supersymmetric standard model. We find that lepton universality violation in the Z line-shape variables alone would strengthen the bounds on the magnitudes of the lambda' couplings, but a global fit on all data leaves the bounds virtually unchanged at \lambda'(33k)\less than or equal to 0.42 and \lambda'(23k)\less than or equal to 0.50 at the 2 sigma level. Bounds from W decays are less stringent: \lambda'(33k)\less than or equal to 2.4 at 2 sigma, as a consequence of the weaker Fermilab experimental bounds on lepton universality violation in W decays. We also point out the potential of constraining R-parity violating couplings from the measurement of the Y invisible width.
2013-12-18T19:46:40Z
2013-12-18T19:46:40Z
2000-07-01
2013-12-16
Article - Refereed
Lebedev, O ; Loinaz, W ; Takeuchi, T, JUN 1 2000. “Constraints on R-parity violating couplings from lepton universality,” PHYSICAL REVIEW D 61(11): 115005. DOI: 10.1103/PhysRevD.61.115005
0556-2821
http://hdl.handle.net/10919/24750
http://link.aps.org/doi/10.1103/PhysRevD.61.115005
https://doi.org/10.1103/PhysRevD.61.115005
en_US
In Copyright
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/523852020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Synthesis and characterization of Co2FeAl nanowires
Journal of Applied Physics
Sapkota, Keshab R.
Gyawali, Parshu
Forbes, Andrew
Pegg, Ian L.
Philip, John
Physics
Virginia Tech. Physics Department
The Catholic University of America. Department of Physics
The Catholic University of America. The Vitreous State Laboratory
Nanowires
Crystal structure
X-ray diffraction
Magnetic fields
Ferromagnetism
We report the growth and characterization of Co2FeAl nanowires. Nanowires are grown using electrospinning method and the diameters range from 50 to 500 nm. These nanowires exhibit cubic crystal structure with a lattice constant of a - 5.639 angstrom. The nanowires exhibit ferromagnetic behavior with a very high Curie temperature. The temperature dependent magnetization behavior displays an anomaly in the temperature range 600-850 K, which disappears at higher external magnetic fields. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729807]
National Science Foundation - ECCS-0845501
National Science Foundation-MRI
National Science Foundation - DMR-0922997
2015-05-21T15:46:25Z
2015-05-21T15:46:25Z
2012-06-15
2015-04-24
Article - Refereed
Text
Sapkota, Keshab R., Gyawali, Parshu, Forbes, Andrew, Pegg, Ian L., Philip, John (2012). Synthesis and characterization of Co2FeAl nanowires. Journal of Applied Physics, 111(12). doi: 10.1063/1.4729807
0021-8979
http://hdl.handle.net/10919/52385
http://scitation.aip.org/content/aip/journal/jap/111/12/10.1063/1.4729807
https://doi.org/10.1063/1.4729807
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
5 pages
application/pdf
application/pdf
American Institute of Physics
oai:vtechworks.lib.vt.edu:10919/728612022-06-16T17:38:38Zcom_10919_5com_10919_25799com_10919_24464com_10919_24211com_10919_5553col_10919_70873col_10919_24465col_10919_24287
Applied Antineutrino Physics 2015 -- Conference Summary
Bowden, N. S.
Heeger, K. M.
Huber, Patrick
Mariani, Camillo
Vogelaar, R. Bruce
Center for Neutrino Physics
Physics
hep-ex
hep-ph
nucl-ex
physics.ins-det
This is a brief summary of the 11th Applied Antineutrino Physics 2015 workshop held at the Virginia Tech Arlington Research Facility from December 7-8, 2015.
37 pages, 19 figures
2016-09-01T00:51:25Z
2016-09-01T00:51:25Z
2016-02
Conference proceeding
http://hdl.handle.net/10919/72861
http://arxiv.org/abs/1602.04759v1
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oai:vtechworks.lib.vt.edu:10919/1171432024-03-12T15:59:41Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Search for the double-charmonium state with ηcJ/ψ at Belle
Journal of High Energy Physics
Yin, J. H.
Li, Y. B.
Won, E.
Adachi, I.
Aihara, H.
Al Said, S.
Asner, D. M.
Aushev, T.
Ayad, R.
Babu, V.
Banerjee, Sw
Behera, P.
Belous, K.
Bennett, J.
Bessner, M.
Bilka, T.
Biswas, D.
Bodrov, D.
Bonvicini, G.
Borah, J.
Bozek, A.
Bračko, M.
Branchini, P.
Browder, T. E.
Budano, A.
Červenkov, D.
Chang, M. -C.
Cheon, B. G.
Chilikin, K.
Cho, H. E.
Cho, K.
Choi, S. -K.
Choi, Y.
Choudhury, S.
Cinabro, D.
Cochran, J.
Das, S.
De Nardo, G.
De Pietro, G.
Dhamija, R.
Di Capua, F.
Dingfelder, J.
Doležal, Z.
Dong, T. V.
Epifanov, D.
Ferber, T.
Ferlewicz, D.
Fulsom, B. G.
Gaur, V.
Giri, A.
Goldenzweig, P.
Graziani, E.
Gu, T.
Guan, Y.
Gudkova, K.
Hadjivasiliou, C.
Halder, S.
Hara, T.
Hayasaka, K.
Hayashii, H.
Herrmann, D.
Hou, W. -S.
Hsu, C. -L.
Iijima, T.
Ipsita, N.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Jacobs, W. W.
Ji, Q. P.
Jia, S.
Jin, Y.
Joo, K. K.
Kahn, J.
Kaliyar, A. B.
Kawasaki, T.
Kiesling, C.
Kim, C. H.
Kim, D. Y.
Kim, K. -H.
Kim, Y. -K.
Kindo, H.
Kinoshita, K.
Kodyš, P.
Korobov, A.
Korpar, S.
Kovalenko, E.
Križan, P.
Krokovny, P.
Kuhr, T.
Kumar, M.
Kumar, R.
Kumara, K.
Lam, T.
Lange, J. S.
Lee, S. C.
Li, L. K.
Li, Y.
Libby, J.
Lieret, K.
Lin, Y. -R.
Liventsev, D.
Masuda, M.
Matsuda, T.
Matvienko, D.
Maurya, S. K.
Meier, F.
Merola, M.
Metzner, F.
Mizuk, R.
Mohanty, G. B.
Mussa, R.
Nakamura, I.
Narwal, D.
Natkaniec, Z.
Natochii, A.
Nayak, L.
Nayak, M.
Nisar, N. K.
Nishida, S.
Ogawa, S.
Ono, H.
Oskin, P.
Pakhlova, G.
Pardi, S.
Park, H.
Park, J.
Park, S. -H.
Passeri, A.
Patra, S.
Paul, S.
Pestotnik, R.
Piilonen, L. E.
Podobnik, T.
Prencipe, E.
Prim, M. T.
Rout, N.
Russo, G.
Sandilya, S.
Sangal, A.
Santelj, L.
Savinov, V.
Schnell, G.
Schwanda, C.
Seino, Y.
Senyo, K.
Shan, W.
Shapkin, M.
Sharma, C.
Shiu, J. -G.
Solovieva, E.
Starič, M.
Stottler, Z. S.
Sumihama, M.
Takizawa, M.
Tanida, K.
Tenchini, F.
Tiwary, R.
Uchida, M.
Uglov, T.
Unno, Y.
Uno, S.
Usov, Y.
Vahsen, S. E.
Varner, G.
Vinokurova, A.
Wang, D.
Wang, E.
Wang, M. -Z.
Wang, X. L.
Watanuki, S.
Werbycka, O.
Xu, X.
Yabsley, B. D.
Yan, W.
Yang, S. B.
Yelton, J.
Yook, Y.
Yuan, C. Z.
Zhang, Z. P.
Zhilich, V.
Zhukova, V.
5106 Nuclear and Plasma Physics
5107 Particle and High Energy Physics
51 Physical Sciences
4902 Mathematical physics
<jats:title>A<jats:sc>bstract</jats:sc>
</jats:title><jats:p>We measure the cross section of <jats:italic>e</jats:italic><jats:sup>+</jats:sup><jats:italic>e</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup> → <jats:italic>η</jats:italic><jats:sub><jats:italic>c</jats:italic></jats:sub><jats:italic>J/ψ</jats:italic> at the Υ(<jats:italic>nS</jats:italic>)(<jats:italic>n</jats:italic> = 1–5) on-resonance and 10.52 GeV off-resonance energy points using the full data sample collected by the Belle detector with an integrated luminosity of 955 fb<jats:sup><jats:italic>−</jats:italic>1</jats:sup>. We also search for double charmonium production in <jats:italic>e</jats:italic><jats:sup>+</jats:sup><jats:italic>e</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup> → <jats:italic>η</jats:italic><jats:sub><jats:italic>c</jats:italic></jats:sub><jats:italic>J/ψ</jats:italic> via initial state radiation near the <jats:italic>η</jats:italic><jats:sub><jats:italic>c</jats:italic></jats:sub><jats:italic>J/ψ</jats:italic> threshold. No evident signal of the double charmonium state is found, but evidence for the <jats:italic>e</jats:italic><jats:sup>+</jats:sup><jats:italic>e</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup><jats:italic>→ η</jats:italic><jats:sub><jats:italic>c</jats:italic></jats:sub><jats:italic>J/ψ</jats:italic> process is found with a statistical significance greater than 3<jats:italic>.</jats:italic>3<jats:italic>σ</jats:italic> near the <jats:italic>η</jats:italic><jats:sub><jats:italic>c</jats:italic></jats:sub><jats:italic>J/ψ</jats:italic> threshold. The average cross section near the threshold is measured and upper limits of cross sections are set for other regions.</jats:p>
Published online version
2023-12-08T18:19:26Z
2023-12-08T18:19:26Z
2023-08-18
Article - Refereed
121 (Article number)
1126-6708
https://hdl.handle.net/10919/117143
https://doi.org/10.1007/jhep08(2023)121
2023
8
Piilonen, Leo [0000-0001-6836-0748]
1029-8479
en
http://dx.doi.org/10.1007/jhep08(2023)121
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
Pages 121
application/pdf
Springer
oai:vtechworks.lib.vt.edu:10919/1128012022-12-07T08:14:51Zcom_10919_5com_10919_25799com_10919_86665com_10919_24211com_10919_5553col_10919_70873col_10919_86666col_10919_24287
Critical dynamics of the antiferromagnetic O(3) nonlinear sigma model with conserved magnetization
Physical Review E
Yao, Louie Hong
Täuber, Uwe C.
We study the near-equilibrium critical dynamics of the O(3) nonlinear sigma model describing isotropic antiferromagnets with a nonconserved order parameter reversibly coupled to the conserved total magnetization. To calculate response and correlation functions, we set up a description in terms of Langevin stochastic equations of motion, and their corresponding Janssen-De Dominicis response functional. We find that in equilibrium, the dynamics is well-separated from the statics, at least to one-loop order in a perturbative treatment with respect to the static and dynamical nonlinearities. Since the static nonlinear sigma model must be analyzed in a dimensional d=2+ɛ expansion about its lower critical dimension dlc=2, whereas the dynamical mode-coupling terms are governed by the upper critical dimension dc=4, a simultaneous perturbative dimensional expansion is not feasible, and the reversible critical dynamics for this model cannot be accessed at the static critical renormalization group fixed point. However, in the coexistence limit addressing the long-wavelength properties of the low-temperature ordered phase, we can perform an ϵ=4-d expansion near dc. This yields anomalous scaling features induced by the massless Goldstone modes, namely subdiffusive relaxation for the conserved magnetization density with asymptotic scaling exponent zΓ=d-2, which may be observable in neutron scattering experiments. Intriguingly, if initialized near the critical point, the renormalization group flow for the effective dynamical exponents recovers their universal critical values zc=d/2 in an intermediate crossover region.
Accepted version
2022-12-06T14:56:42Z
2022-12-06T14:56:42Z
2022-06-01
2022-12-06T10:51:42Z
Article - Refereed
Journal Article
Text
064128 (Article number)
2470-0045
http://hdl.handle.net/10919/112801
https://doi.org/10.1103/PhysRevE.105.064128
105
6
Tauber, Uwe [0000-0001-7854-2254]
35854614
2470-0053
en
https://www.ncbi.nlm.nih.gov/pubmed/35854614
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/253642020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Direct evidence for singlet-triplet exciton annihilation in pi-conjugated polymers
Physical Review B
List, E. J. W.
Scherf, U.
Mullen, K.
Graupner, W.
Kim, C. H.
Shinar, J.
Physics
Virginia Tech
light-emitting-diodes
poly(para-phenylene)-type ladder polymers
detected magnetic-resonance
energy-transfer
spectroscopy
polarons
gap
electroluminescence
photoluminescence
phosphorescence
Physics
A blend of two conjugated polymers with different optical band gaps and different triplet exciton (TE) magnetic resonance features was studied by means of photoinduced absorption (PA) and photoluminescence detected magnetic resonance. From the latter we find that a reduction of TE's on either of the two polymers enhances the radiative singlet exciton (SE) decay on both polymers nearly identically. The PA results rule out other possible mechanisms to yield this signal, except one: a long-range SE-TE annihilation due to a dipole-dipole transfer mechanism. Based on this finding, we calculate the transfer radius and quantify the annihilation process for this system and for other conjugated polymers.
2014-02-11T13:45:54Z
2014-02-11T13:45:54Z
2002-12-06
2013-12-18
Article - Refereed
List, EJW ; Scherf, U ; Mullen, K ; et al., Dec 15, 2002. "Direct evidence for singlet-triplet exciton annihilation in pi-conjugated polymers," PHYSICAL REVIEW B 66(23): 235203. DOI: 10.1103/PhysRevB.66.235203
1098-0121
http://hdl.handle.net/10919/25364
http://link.aps.org/doi/10.1103/PhysRevB.66.235203
https://doi.org/10.1103/PhysRevB.66.235203
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/933482020-10-22T03:36:31Zcom_10919_24211com_10919_5553col_10919_24287
The Astropy Project: Building an Open-science Project and Status of the v2.0 Core Package
Astronomical Journal
Price-Whelan, A. M.
Sipocz, B. M.
Gunther, H. M.
Lim, P. L.
Crawford, S. M.
Conseil, S.
Shupe, D. L.
Craig, M. W.
Dencheva, N.
Ginsburg, A.
VanderPlas, J. T.
Bradley, L. D.
Perez-Suarez, D.
de Val-Borro, M.
Aldcroft, T. L.
Cruz, K. L.
Robitaille, T. P.
Tollerud, E. J.
Ardelean, C.
Babej, T.
Bach, Y. P.
Bachetti, M.
Bakanov, A. V.
Bamford, S. P.
Barentsen, G.
Barmby, P.
Baumbach, A.
Berry, K. L.
Biscani, F.
Boquien, M.
Bostroem, K. A.
Bouma, L. G.
Brammer, G. B.
Bray, E. M.
Breytenbach, H.
Buddelmeijer, H.
Burke, D. J.
Calderone, G.
Cano Rodriguez, J. L.
Cara, M.
Cardoso, J. V. M.
Cheedella, S.
Copin, Y.
Corrales, L.
Crichton, D.
D'Avella, D.
Deil, C.
Depagne, E.
Dietrich, J. P.
Donath, A.
Droettboom, M.
Earl, N.
Erben, T.
Fabbro, S.
Ferreira, L. A.
Finethy, T.
Fox, R. T.
Garrison, L. H.
Gibbons, S. L. J.
Goldstein, D. A.
Gommers, R.
Greco, J. P.
Greenfield, P.
Groener, A. M.
Grollier, F.
Hagen, A.
Hirst, P.
Homeier, D.
Horton, A. J.
Hosseinzadeh, G.
Hu, L.
Hunkeler, J. S.
Ivezic, Z.
Jain, A.
Jenness, T.
Kanarek, G.
Kendrew, S.
Kern, N. S.
Kerzendorf, W. E.
Khvalko, A.
King, J.
Kirkby, D.
Kulkarni, A. M.
Kumar, A.
Lee, A.
Lenz, D.
Littlefair, S. P.
Ma, Z.
Macleod, D. M.
Mastropietro, M.
McCully, C.
Montagnac, S.
Morris, B. M.
Mueller, M.
Mumford, S. J.
Muna, D.
Murphy, N. A.
Nelson, S.
Nguyen, G. H.
Ninan, J. P.
Noethe, M.
Ogaz, S.
Oh, S.
Parejko, J. K.
Parley, N.
Pascual, S.
Patil, R.
Patil, A. A.
Plunkett, A. L.
Prochaska, J. X.
Rastogi, T.
Janga, V. Reddy
Sabater, J.
Sakurikar, P.
Seifert, M.
Sherbert, L. E.
Sherwood-Taylor, H.
Shih, A. Y.
Sick, J.
Silbiger, M. T.
Singanamalla, S.
Singer, L. P.
Sladen, P. H.
Sooley, K. A.
Sornarajah, S.
Streicher, O.
Teuben, P.
Thomas, S. W.
Tremblay, G. R.
Turner, J. E. H.
Terron, V.
van Kerkwijk, M. H.
de la Vegat, A.
Watkins, L. L.
Weaver, B. A.
Whitmore, J. B.
Woillez, J.
Zabalza, V.
Physics
methods: data analysis
methods: miscellaneous
methods: statistical
reference systems
The Astropy Project supports and fosters the development of open-source and openly developed Python packages that provide commonly needed functionality to the astronomical community. A key element of the Astropy Project is the core package astropy, which serves as the foundation for more specialized projects and packages. In this article, we provide an overview of the organization of the Astropy project and summarize key features in the core package, as of the recent major release, version 2.0. We then describe the project infrastructure designed to facilitate and support development for a broader ecosystem of interoperable packages. We conclude with a future outlook of planned new features and directions for the broader Astropy Project.
Google; NumFOCUS; Python Software Foundation; Space Telescope Science Institute; Harvard-Smithsonian Center for Astrophysics; South African Astronomical Observatory; National Aeronautics and Space Administration through the Smithsonian Astrophysical Observatory [SV3-73016]; National Aeronautics Space Administration [NAS8-03060]; UW eScience Institute via Moore Foundation; Sloan Foundation; Washington Research Foundation; NASA's Planetary Astronomy Program; NASA [NAS8-03060, NAS 5-26555]; NASA through Hubble Fellowship - Space Telescope Science Institute [51316.01]; Giacconi Fellowship; FONDECYT [1170618]; MINEDUC-UA [ANT 1655, ANT 1656]; German Research Foundation (DFG) [SFB 881]; German Research Foundation (DFG); NSF [AST-1313484]; Spanish government [AYA2016-75808-R]; Gemini Observatory; Korea Astronomy and Space Science Institute, under the RD program
The Astropy community is supported by and makes use of a number of organizations and services outside the traditional academic community. We thank Google for financing and organizing the Google Summer of Code (GSoC) program, that has funded several students per year to work on Astropy related projects over the summer. These students often turn into longterm contributors. We also thank NumFOCUS and the Python Software Foundation for financial support. Within the academic community, we thank institutions that make it possible for astronomers and other developers on their staff to contribute their time to the development of Astropy projects. We acknowledge the support of the Space Telescope Science Institute, Harvard-Smithsonian Center for Astrophysics, and the South African Astronomical Observatory.r The following individuals would like to recognize support for their personal contributions. H.M.G. was supported by the National Aeronautics and Space Administration through the Smithsonian Astrophysical Observatory contract SV3-73016 to MIT for Support of the Chandra X-Ray Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. J.T.V. was supported by the UW eScience Institute via grants from the Moore Foundation, the Sloan Foundation, and the Washington Research Foundation. S.M.C. acknowledges the National Research Foundation of South Africa. M.V.B. was supported by NASA's Planetary Astronomy Program. T.L.A. was supported by NASA contract NAS8-03060. Support for E.J.T. was provided by NASA through Hubble Fellowship grant No. 51316.01 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555, as well as a Giacconi Fellowship. M.B. was supported by the FONDECYT regular project 1170618 and the MINEDUC-UA projects codes ANT 1655 and ANT 1656. D.H. was supported through the SFB 881 "The Milky Way System" by the German Research Foundation (DFG). W.E.K was supported by an ESO Fellowship. C.M. is supported by NSF grant AST-1313484. S.P. was supported by grant AYA2016-75808-R (FEDER) issued by the Spanish government. J.E.H.T. was supported by the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., on behalf of the international Gemini partnership of Argentina, Brazil, Canada, Chile, and the United States of America. Y.P.B was supported by the Korea Astronomy and Space Science Institute, under the R&D program supervised by the Ministry of Science, ICT, and Future Planning.
2019-09-04T13:34:27Z
2019-09-04T13:34:27Z
2018-09
Article - Refereed
Text
StillImage
0004-6256
123
http://hdl.handle.net/10919/93348
https://doi.org/10.3847/1538-3881/aabc4f
156
3
1538-3881
en
Creative Commons Attribution 3.0 Unported
http://creativecommons.org/licenses/by/3.0/
application/pdf
application/pdf
oai:vtechworks.lib.vt.edu:10919/1175342024-03-15T13:22:08Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Improved Measurement of the Evolution of the Reactor Antineutrino Flux and Spectrum at Daya Bay
Physical Review Letters
An, F. P.
Bai, W. D.
Balantekin, A. B.
Bishai, M.
Blyth, S.
Cao, G. F.
Cao, J.
Chang, J. F.
Chang, Y.
Chen, H. S.
Chen, H. Y.
Chen, S. M.
Chen, Y.
Chen, Y. X.
Cheng, J.
Cheng, J.
Cheng, Y. -C.
Cheng, Z. K.
Cherwinka, J. J.
Chu, M. C.
Cummings, J. P.
Dalager, O.
Deng, F. S.
Ding, Y. Y.
Diwan, M. V.
Dohnal, T.
Dolzhikov, D.
Dove, J.
Dugas, K. V.
Duyang, H. Y.
Dwyer, D. A.
Gallo, J. P.
Gonchar, M.
Gong, G. H.
Gong, H.
Gu, W. Q.
Guo, J. Y.
Guo, L.
Guo, X. H.
Guo, Y. H.
Guo, Z.
Hackenburg, R. W.
Han, Y.
Hans, S.
He, M.
Heeger, K. M.
Heng, Y. K.
Hor, Y. K.
Hsiung, Y. B.
Hu, B. Z.
Hu, J. R.
Hu, T.
Hu, Z. J.
Huang, H. X.
Huang, J. H.
Huang, X. T.
Huang, Y. B.
Huber, P.
Jaffe, D. E.
Jen, K. L.
Ji, X. L.
Ji, X. P.
Johnson, R. A.
Jones, D.
Kang, L.
Kettell, S. H.
Kohn, S.
Kramer, M.
Langford, T. J.
Lee, J.
Lee, J. H. C.
Lei, R. T.
Leitner, R.
Leung, J. K. C.
Li, F.
Li, H. L.
Li, J. J.
Li, Q. J.
Li, R. H.
Li, S.
Li, S. C.
Li, W. D.
Li, X. N.
Li, X. Q.
Li, Y. F.
Li, Z. B.
Liang, H.
Lin, C. J.
Lin, G. L.
Lin, S.
Ling, J. J.
Link, J. M.
Littenberg, L.
Littlejohn, B. R.
Liu, J. C.
Liu, J. L.
Liu, J. X.
Lu, C.
Lu, H. Q.
Luk, K. B.
Ma, B. Z.
Ma, X. B.
Ma, X. Y.
Ma, Y. Q.
Mandujano, R. C.
Marshall, C.
McDonald, K. T.
McKeown, R. D.
Meng, Y.
Napolitano, J.
Naumov, D.
Naumova, E.
Nguyen, T. M. T.
Ochoa-Ricoux, J. P.
Olshevskiy, A.
Park, J.
Patton, S.
Peng, J. C.
Pun, C. S. J.
Qi, F. Z.
Qi, M.
Qian, X.
Raper, N.
Ren, J.
Reveco, C. Morales
Rosero, R.
Roskovec, B.
Ruan, X. C.
Russell, B.
Steiner, H.
Sun, J. L.
Tmej, T.
Treskov, K.
Tse, W. -H.
Tull, C. E.
Tung, Y. C.
Viren, B.
Vorobel, V.
Wang, C. H.
Wang, J.
Wang, M.
Wang, N. Y.
Wang, R. G.
Wang, W.
Wang, X.
Wang, Y.
Wang, Y. F.
Wang, Z.
Wang, Z.
Wang, Z. M.
Wei, H. Y.
Wei, L. H.
Wen, L. J.
Whisnant, K.
White, C. G.
Wong, H. L. H.
Worcester, E.
Wu, D. R.
Wu, Q.
Wu, W. J.
Xia, D. M.
Xie, Z. Q.
Xing, Z. Z.
Xu, H. K.
Xu, J. L.
Xu, T.
Xue, T.
Yang, C. G.
Yang, L.
Yang, Y. Z.
Yao, H. F.
Ye, M.
Yeh, M.
Young, B. L.
Yu, H. Z.
Yu, Z. Y.
Yue, B. B.
Zavadskyi, V.
Zeng, S.
Zeng, Y.
Zhan, L.
Zhang, C.
Zhang, F. Y.
Zhang, H. H.
Zhang, J. L.
Zhang, J. W.
Zhang, Q. M.
Zhang, S. Q.
Zhang, X. T.
Zhang, Y. M.
Zhang, Y. X.
Zhang, Y. Y.
Zhang, Z. J.
Zhang, Z. P.
Zhang, Z. Y.
Zhao, J.
Zhao, R. Z.
Zhou, L.
Zhuang, H. L.
Zou, J. H.
Physics
Daya Bay Collaboration
Nuclear Reactors
Uranium
Reactor neutrino experiments play a crucial role in advancing our knowledge of neutrinos. In this Letter, the evolution of the flux and spectrum as a function of the reactor isotopic content is reported in terms of the inverse-beta-decay yield at Daya Bay with 1958 days of data and improved systematic uncertainties. These measurements are compared with two signature model predictions: the Huber-Mueller model based on the conversion method and the SM2018 model based on the summation method. The measured average flux and spectrum, as well as the flux evolution with the Pu239 isotopic fraction, are inconsistent with the predictions of the Huber-Mueller model. In contrast, the SM2018 model is shown to agree with the average flux and its evolution but fails to describe the energy spectrum. Altering the predicted inverse-beta-decay spectrum from Pu239 fission does not improve the agreement with the measurement for either model. The models can be brought into better agreement with the measurements if either the predicted spectrum due to U235 fission is changed or the predicted U235, U238, Pu239, and Pu241 spectra are changed in equal measure.
Published version
2024-01-22T16:11:24Z
2024-01-22T16:11:24Z
2023-05-22
Article - Refereed
Article
Journal
Text
ARTN 211801 (Article number)
0031-9007
https://hdl.handle.net/10919/117534
https://doi.org/10.1103/PhysRevLett.130.211801
130
21
Link, Jonathan [0000-0002-1514-0650]
37295075
1079-7114
en
https://www.ncbi.nlm.nih.gov/pubmed/37295075
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
8 page(s)
application/pdf
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/478692020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Nonlinear current-induced forces in Si atomic wires
Physical Review B
Yang, Z. Q.
Di Ventra, M.
Physics
Virginia Tech
gold contacts
driving force
electromigration
transport
bias
conductance
principles
resistance
physics, condensed matter
We report first-principles calculations of current-induced forces in Si atomic wires as a function of bias and wire length. We find that these forces are strongly nonlinear as a function of bias due to the competition between the force originating from the scattering states and the force due to bound states. We also find that the shorter the wire, the larger the average force in the wire, suggesting that the wires are more difficult to break under current flow with increasing length. The last finding is in agreement with recent experimental data.
National Science Foundation Grants Nos. DMR-01-02277, DMR-01-33075
Carilion Biomedical Institute
Oak Ridge Associated Universities
Acknowledgment is also made to the Donors of The Petroleum Research Fund, administered by the American Chemical Society
2014-05-07T15:37:02Z
2014-05-07T15:37:02Z
2003-04
2014-04-23
Article - Refereed
Yang, Z. Q.; Di Ventra, M., "Nonlinear current-induced forces in Si atomic wires," Phys. Rev. B 67, 161311(R) DOI: http://dx.doi.org/10.1103/PhysRevB.67.161311
1098-0121
http://hdl.handle.net/10919/47869
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.67.161311
https://doi.org/10.1103/PhysRevB.67.161311
en_US
In Copyright
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application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/1175262024-03-15T13:29:05Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Monitoring the SNS basement neutron background with the MARS detector
Journal of Instrumentation
Akimov, D.
An, P.
Awe, C.
Barbeau, P. S.
Becker, B.
Belov, V.
Bernardi, I.
Blackston, M. A.
Bock, C.
Bolozdynya, A.
Browning, J.
Cabrera-Palmer, B.
Chernyak, D.
Conley, E.
Daughhetee, J.
Detwiler, J.
Ding, K.
Durand, M. R.
Efremenko, Y.
Elliott, S. R.
Fabris, L.
Febbraro, M.
Rosso, A. Gallo
Galindo-Uribarri, A.
Green, M. P.
Heath, M. R.
Hedges, S.
Hoang, D.
Hughes, M.
Johnson, T.
Khromov, A.
Konovalov, A.
Kozlova, E.
Kumpan, A.
Li, L.
Link, J. M.
Liu, J.
Mann, K.
Markoff, D. M.
Mastroberti, J.
Mueller, P. E.
Newby, J.
Parno, D. S.
Penttila, S.
Pershey, D.
Rapp, R.
Ray, H.
Raybern, J.
Razuvaeva, O.
Reyna, D.
Rich, G. C.
Ross, J.
Rudik, D.
Runge, J.
Salvat, D. J.
Salyapongse, A. M.
Scholberg, K.
Shakirov, A.
Simakov, G.
Sinev, G.
Snow, W. M.
Sosnovstsev, V.
Suh, B.
Tayloe, R.
Tellez-Giron-Flores, K.
Tolstukhin, I.
Ujah, E.
Vanderwerp, J.
Varner, R. L.
Virtue, C. J.
Visser, G.
Wongjirad, T.
Yen, Y. -R.
Yoo, J.
Yu, C. -H.
Zettlemoyer, J.
Johnson, B. A.
Neutron detectors (cold, thermal, fast neutrons)
Neutrino detectors
We present the analysis and results of the first dataset collected with the MARS neutron detector deployed at the Oak Ridge National Laboratory Spallation Neutron Source (SNS) for the purpose of monitoring and characterizing the beam-related neutron (BRN) background for the COHERENT collaboration. MARS was positioned next to the COH-CsI coherent elastic neutrino-nucleus scattering detector in the SNS basement corridor. This is the basement location of closest proximity to the SNS target and thus, of highest neutrino flux, but it is also well shielded from the BRN flux by infill concrete and gravel. These data show the detector registered roughly one BRN per day. Using MARS' measured detection efficiency, the incoming BRN flux is estimated to be 1.20 ± 0.56 neutrons/m2/MWh for neutron energies above ∼3.5 MeV and up to a few tens of MeV. We compare our results with previous BRN measurements in the SNS basement corridor reported by other neutron detectors.
Published version
2024-01-22T16:06:13Z
2024-01-22T16:06:13Z
2022-03-22
Article - Refereed
Article
Journal
Text
ARTN P03021 (Article number)
1748-0221
https://hdl.handle.net/10919/117526
https://doi.org/10.1088/1748-0221/17/03/P03021
17
3
Link, Jonathan [0000-0002-1514-0650]
1748-0221
en
In Copyright
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25 page(s)
application/pdf
application/pdf
IOP
oai:vtechworks.lib.vt.edu:10919/258532020-10-29T05:01:43Zcom_10919_24722com_10919_24211com_10919_5553col_10919_24723col_10919_24287
Galactic Foregrounds in Owens Valley Radio Observatory and UCSB South Pole 1994 Cosmic Microwave Background Anisotropy Data
Astrophysical Journal
Mukherjee, P.
Dennison, B.
Ratra, B.
Simonetti, John H.
Ganga, K.
Hamilton, J. C.
Institute for Particle, Nuclear and Astronomical Sciences (IPNAS)
Physics
cosmic microwave background
cosmology : observations
diffuse
radiation
dust, extinction
dark-matter cosmogonies
spinning dust grains
h-alpha emission
measurement constraints
sky maps
infrared cirrus
tenerife data
radiation
scales
power
We study Galactic emission foreground contamination of the Owens Valley Radio Observatory and UCSB South Pole 1994 cosmic microwave background anisotropy data by cross-correlating with templates of infrared dust emission and new high-resolution Virginia Tech Spectral Line Survey (VTSS) and Southern Halpha Sky Survey Atlas (SHASSA) Halpha data. Halpha data provide rough upper limits on the level of free-free emission in the data sets. The cross-correlation analysis does not contradict a two-component foreground emission hypothesis, with the two dust-correlated components being free-free emission and spinning-dust emission.
NSF AST 98-00476, AST 00-98487, AST 98-75031
Horton Foundation Grant
2014-03-10T13:18:51Z
2014-03-10T13:18:51Z
2002-11
2014-02-28
Article - Refereed
Pia Mukherjee et al. 2002 ApJ 579 83 doi:10.1086/342702
0004-637X
http://hdl.handle.net/10919/25853
http://iopscience.iop.org/0004-637X/579/1/83
https://doi.org/10.1086/342702
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
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IOP PUBLISHING LTD
oai:vtechworks.lib.vt.edu:10919/1174852024-03-15T13:33:10Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Search for the decay B-s(0) -> eta eta
Physical Review D
Bhuyan, B.
Nath, K. J.
Borah, J.
Adachi, I.
Aihara, H.
Al Said, S.
Asner, D. M.
Atmacan, H.
Aulchenko, V.
Aushev, T.
Ayad, R.
Babu, V.
Badhrees, I.
Bakich, A. M.
Behera, P.
Bennett, J.
Bhardwaj, V.
Bilka, T.
Biswal, J.
Bobrov, A.
Bozek, A.
Bracko, M.
Browder, T. E.
Campajola, M.
Chekelian, V.
Chen, A.
Cheon, B. G.
Chilikin, K.
Cho, K.
Choi, S. -K.
Choi, Y.
Choudhury, S.
Cinabro, D.
Cunliffe, S.
Dash, N.
Di Capua, F.
Di Carlo, S.
Dolezal, Z.
Dong, T.
Dubey, S.
Eidelman, S.
Fast, J. E.
Ferber, T.
Fulsom, B. G.
Gaur, V.
Gabyshev, N.
Garmash, A.
Giri, A.
Goldenzweig, P.
Golob, B.
Haba, J.
Hara, T.
Hartbrich, O.
Hayasaka, K.
Hayashii, H.
Hou, W. -S.
Iijima, T.
Inami, K.
Inguglia, G.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Iwasaki, Y.
Jacobs, W. W.
Jia, S.
Jin, Y.
Joffe, D.
Joo, K. K.
Kaliyar, A. B.
Kang, K. H.
Karyan, G.
Kawasaki, T.
Kichimi, H.
Kiesling, C.
Kim, D. Y.
Kim, H. J.
Kim, K. T.
Kim, S. H.
Kinoshita, K.
Kodys, P.
Korpar, S.
Kotchetkov, D.
Krizan, P.
Kroeger, R.
Krokovny, P.
Kumar, R.
Kuzmin, A.
Kwon, Y. -J.
Lange, J. S.
Lee, J. K.
Lee, J. Y.
Lee, S. C.
Li, C. H.
Li, L. K.
Li, Y. B.
Li Gioi, L.
Libby, J.
Lieret, K.
Liventsev, D.
Lu, P. -C.
Luo, T.
MacNaughton, J.
MacQueen, C.
Masuda, M.
Matvienko, D.
Merola, M.
Miyabayashi, K.
Miyata, H.
Mizuk, R.
Mohanty, G. B.
Mori, T.
Mussa, R.
Nakano, T.
Nakao, M.
Nayak, M.
Niiyama, M.
Nisar, N. K.
Nishida, S.
Ogawa, K.
Ogawa, S.
Ono, H.
Onuki, Y.
Pakhlov, P.
Pakhlova, G.
Pal, B.
Pang, T.
Pardi, S.
Park, H.
Patra, S.
Paul, S.
Pedlar, T. K.
Pestotnik, R.
Piilonen, L. E.
Popov, V.
Prencipe, E.
Ritter, M.
Rostomyan, A.
Russo, G.
Sakai, Y.
Salehi, M.
Sandilya, S.
Santelj, L.
Sanuki, T.
Savinov, V.
Schneider, O.
Schnell, G.
Schueler, J.
Schwanda, C.
Schwartz, A. J.
Seino, Y.
Senyo, K.
Sevior, M. E.
Shebalin, V.
Shen, C. P.
Shiu, J. -G.
Solovieva, E.
Sumiyoshi, T.
Sutcliffe, W.
Takizawa, M.
Tamponi, U.
Tanida, K.
Tenchini, F.
Trabelsi, K.
Uchida, M.
Uglov, T.
Unno, Y.
Uno, S.
Urquijo, P.
Usov, Y.
Vahsen, S. E.
Van Tonder, R.
Varner, G.
Vossen, A.
Wang, C. H.
Wang, M. -Z.
Wang, P.
Wiechczynski, J.
Won, E.
Yang, S. B.
Ye, H.
Yin, J. H.
Yusa, Y.
Zhang, Z. P.
Zhilich, V.
Zhukova, V.
Physics
We report results from a search for the decay Bs0→ηη using 121.4 fb-1 of data collected at the (5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We do not observe any signal and set an upper limit on the branching fraction of 14.3×10-5 at 90% confidence level. This result represents a significant improvement over the previous most stringent limit.
Published version
2024-01-22T13:47:41Z
2024-01-22T13:47:41Z
2022-01-11
Article - Refereed
Article
Journal
Text
ARTN 012007 (Article number)
2470-0010
https://hdl.handle.net/10919/117485
https://doi.org/10.1103/PhysRevD.105.012007
105
1
Piilonen, Leo [0000-0001-6836-0748]
2470-0029
en
In Copyright
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7 page(s)
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oai:vtechworks.lib.vt.edu:10919/731132024-03-13T14:10:09Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
The field theory approach to percolation processes
Annals of Physics
Janssen, H. K.
Täuber, Uwe C.
Physics
Physics, Multidisciplinary
Physics
percolation
epidemic processes
directed percolation
dynamic isotropic percolation
active to absorbing phase transitions
renormalization group theory
dynamic critical phenomena
crossover
STOCHASTIC-EVOLUTION PROCESSES
UNIVERSAL SCALING BEHAVIOR
PAIR-CONTACT PROCESS
ORDER EPSILON-TERMS
DIRECTED PERCOLATION
RENORMALIZATION-GROUP
PHASE-TRANSITIONS
DYNAMICAL PERCOLATION
CELLULAR AUTOMATA
ABSORBING STATES
Published version
2016-09-30T13:10:39Z
2016-09-30T13:10:39Z
2005-01-01
Article - Refereed
0003-4916
http://hdl.handle.net/10919/73113
https://doi.org/10.1016/j.aop.2004.09.011
315
1
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000226780300006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
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Academic Press – Elsevier
oai:vtechworks.lib.vt.edu:10919/479012021-08-11T15:36:22Zcom_10919_24211com_10919_5553col_10919_24287
Transmission-electron spin resonance in dilute CuFe alloys
Physical Review B
Ritter, Alfred L.
Silsbee, R. H.
Physics
physics, condensed matter
Alloys of Cu with nominally 5- and 10-at. ppm Fe were studied by transmission-electron spin resonance (TESR) in the temperature range 2-40 K. The samples were strained in order to remove background signals which hamper analysis of TESR in relatively pure metal films. These measurements represent the first reported observation of electron spin resonance in a dilute magnetic alloy below its Kondo temperature. The relaxation rate of these alloys roughly scales with Fe concentration and exhibits a clear minimum at approximately 25 K. The contribution of the Fe impurities to the relaxation rate of the alloys is (7.7 ± 0.9) × 108/sec. at. ppm at 25K. The g value of the alloys did not deviate from the g value of pure Cu within the experimental scatter. We analyze our results in terms of coupled Bloch equations and discuss possible mechanisms for the inferred local-moment-lattice and conduction-electron-lattice relaxation rates.
U. S. ERDA under Contract No. AT(11-1) -3150, Technical Report No. C00-3150-39
NSF Grants DMR-74-20689, DMR-76-01281through the Cornell Materials Science Center, Report No. 2839
2014-05-07T15:37:08Z
2014-05-07T15:37:08Z
1978-04
2014-04-23
Article - Refereed
Ritter, A. L.; Silsbee, R. H., "Transmission-electron spin resonance in dilute CuFe alloys," Phys. Rev. B 17, 2833 DOI: http://dx.doi.org/10.1103/PhysRevB.17.2833
0163-1829
http://hdl.handle.net/10919/47901
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.17.2833
https://doi.org/10.1103/PhysRevB.17.2833
en_US
In Copyright
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/730662024-03-13T14:10:20Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Thermodynamic equilibrium as a symmetry of the Schwinger-Keldysh action
Physical Review B
Sieberer, L. M.
Chiocchetta, A.
Gambassi, A.
Täuber, Uwe C.
Diehl, S.
Physics
Physics, Condensed Matter
Physics
QUANTUM-FIELD THEORY
FUNCTIONAL RENORMALIZATION-GROUP
EXPECTATION VALUE FORMALISM
DETAILED BALANCE
STATISTICAL-MECHANICS
CRITICAL-DYNAMICS
INSULATOR-TRANSITION
SYSTEMS
STATES
THERMALIZATION
Published version
2016-09-29T23:46:29Z
2016-09-29T23:46:29Z
2015-10-28
Article - Refereed
1098-0121
http://hdl.handle.net/10919/73066
https://doi.org/10.1103/PhysRevB.92.134307
92
13
English
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In Copyright
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? - ? (22) page(s)
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American Physical Society
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Special Issue: "Machine Learning for Computer-Aided Diagnosis in Biomedical Imaging"
Diagnostics
Mun, Seong K.
Koh, Dow-Mu
The radiology imaging community has been developing computer-aided diagnosis (CAD) tools since the early 1990s before the imagination of artificial intelligence (AI) fueled many unbound healthcare expectations and other industries [...]
Published version
2022-06-01T19:20:05Z
2022-06-01T19:20:05Z
2022-05-27
2022-05-27T13:36:40Z
Article
Text
Mun, S.K.; Koh, D.-M. Special Issue: "Machine Learning for Computer-Aided Diagnosis in Biomedical Imaging". Diagnostics 2022, 12, 1331.
http://hdl.handle.net/10919/110390
https://doi.org/10.3390/diagnostics12061331
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
application/pdf
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MDPI
oai:vtechworks.lib.vt.edu:10919/1171542024-03-12T15:57:56Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Measurement of
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asymmetries in
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decays with Belle II
Physical Review D
Adachi, I.
Adamczyk, K.
Aggarwal, L.
Ahmed, H.
Aihara, H.
Akopov, N.
Aloisio, A.
Anh Ky, N.
Asner, D. M.
Atmacan, H.
Aushev, T.
Aushev, V.
Aversano, M.
Babu, V.
Bae, H.
Bahinipati, S.
Bambade, P.
Banerjee, Sw
Barrett, M.
Baudot, J.
Bauer, M.
Baur, A.
Beaubien, A.
Becherer, F.
Becker, J.
Behera, P. K.
Bennett, J. V.
Bertacchi, V.
Bertemes, M.
Bertholet, E.
Bessner, M.
Bettarini, S.
Bhuyan, B.
Bianchi, F.
Bilka, T.
Biswas, D.
Bobrov, A.
Bodrov, D.
Bolz, A.
Bondar, A.
Borah, J.
Bozek, A.
Bračko, M.
Branchini, P.
Briere, R. A.
Browder, T. E.
Budano, A.
Bussino, S.
Campajola, M.
Cao, L.
Casarosa, G.
Cecchi, C.
Cerasoli, J.
Chang, M. -C.
Chang, P.
Cheema, P.
Chekelian, V.
Chen, C.
Cheon, B. G.
Chilikin, K.
Chirapatpimol, K.
Cho, H. -E.
Cho, K.
Cho, S. -J.
Choi, S. -K.
Choudhury, S.
Cochran, J.
Corona, L.
Cremaldi, L. M.
Das, S.
Dattola, F.
De La Cruz-Burelo, E.
De La Motte, S. A.
De Nardo, G.
De Nuccio, M.
De Pietro, G.
de Sangro, R.
Destefanis, M.
Dey, S.
De Yta-Hernandez, A.
Dhamija, R.
Di Canto, A.
Di Capua, F.
Dingfelder, J.
Doležal, Z.
Domínguez Jiménez, I.
Dong, T. V.
Dorigo, M.
Dort, K.
Dreyer, S.
Dubey, S.
Dujany, G.
Ecker, P.
Eliachevitch, M.
Feichtinger, P.
Ferber, T.
Ferlewicz, D.
Fillinger, T.
Finck, C.
Finocchiaro, G.
Fodor, A.
Forti, F.
Frey, A.
Fulsom, B. G.
Gabrielli, A.
Ganiev, E.
Garcia-Hernandez, M.
Garmash, A.
Gaudino, G.
Gaur, V.
Gaz, A.
Gellrich, A.
Ghevondyan, G.
Ghosh, D.
Ghumaryan, H.
Giakoustidis, G.
Giordano, R.
Giri, A.
Glazov, A.
Gobbo, B.
Godang, R.
Gogota, O.
Goldenzweig, P.
Gradl, W.
Grammatico, T.
Granderath, S.
Graziani, E.
Greenwald, D.
Gruberová, Z.
Gu, T.
Guan, Y.
Gudkova, K.
Halder, S.
Han, Y.
Hara, K.
Hara, T.
Hayasaka, K.
Hayashii, H.
Hazra, S.
Hearty, C.
Hedges, M. T.
Heredia de la Cruz, I.
Hernández Villanueva, M.
Hershenhorn, A.
Higuchi, T.
Hill, E. C.
Hoek, M.
Hohmann, M.
Horak, P.
Hsu, C. -L.
Humair, T.
Iijima, T.
Inami, K.
Ipsita, N.
Ishikawa, A.
Ito, S.
Itoh, R.
Iwasaki, M.
Jackson, P.
Jacobs, W. W.
Jang, E. -J.
Ji, Q. P.
Jia, S.
Jin, Y.
Johnson, A.
Joo, K. K.
Junkerkalefeld, H.
Kaliyar, A. B.
Kandra, J.
Kang, K. H.
Kang, S.
Karyan, G.
Kawasaki, T.
Keil, F.
Ketter, C.
Kiesling, C.
Kim, C. -H.
Kim, D. Y.
Kim, K. -H.
Kim, Y. -K.
Kindo, H.
Kinoshita, K.
Kodyš, P.
Koga, T.
Kohani, S.
Kojima, K.
Konno, T.
Korobov, A.
Korpar, S.
Kovalenko, E.
Kowalewski, R.
Kraetzschmar, T. M. G.
Križan, P.
Krokovny, P.
Kulii, Y.
Kuhr, T.
Kumar, M.
Kumara, K.
Kunigo, T.
Kuzmin, A.
Kwon, Y. -J.
Lacaprara, S.
Lai, Y. -T.
Lam, T.
Lanceri, L.
Lange, J. S.
Laurenza, M.
Lautenbach, K.
Leboucher, R.
Le Diberder, F. R.
Lee, M. J.
Leitl, P.
Levit, D.
Lewis, P. M.
Li, C.
Li, L. K.
Libby, J.
Liu, Q. Y.
Liu, Z. Q.
Liventsev, D.
Longo, S.
Lozar, A.
Lueck, T.
Lyu, C.
Ma, Y.
Maggiora, M.
Maharana, S. P.
Maiti, R.
Maity, S.
Mancinelli, G.
Manfredi, R.
Manoni, E.
Mantovano, M.
Marcantonio, D.
Marcello, S.
Marinas, C.
Martel, L.
Martellini, C.
Martini, A.
Martinov, T.
Massaccesi, L.
Masuda, M.
Matsuda, T.
Matsuoka, K.
Matvienko, D.
Maurya, S. K.
McKenna, J. A.
Mehta, R.
Meier, F.
Merola, M.
Metzner, F.
Milesi, M.
Miller, C.
Mirra, M.
Miyabayashi, K.
Mizuk, R.
Mohanty, G. B.
Molina-Gonzalez, N.
Mondal, S.
Moneta, S.
Moser, H. -G.
Mrvar, M.
Mussa, R.
Nakamura, I.
Nakao, M.
Nakazawa, Y.
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Yuan, C. Z.
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Zhilich, V.
Zhou, J. S.
Zhou, Q. D.
Zhukova, V. I.
5106 Nuclear and Plasma Physics
5107 Particle and High Energy Physics
4902 Mathematical Physics
49 Mathematical Sciences
51 Physical Sciences
Published online version
2023-12-08T18:22:24Z
2023-12-08T18:22:24Z
2023-10-01
2023-10-17
Article - Refereed
072012 (Article number)
2470-0010
https://hdl.handle.net/10919/117154
https://doi.org/10.1103/physrevd.108.072012
108
7
Piilonen, Leo [0000-0001-6836-0748]
2470-0029
en
http://dx.doi.org/10.1103/physrevd.108.072012
In Copyright
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Pages 072012
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/479042020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Transport in nanoscale conductors from first principles
Physical Review B
Di Ventra, M.
Lang, N. D.
Physics
Virginia Tech
scanning-tunneling-microscopy
molecular wires
single molecules
charge-transfer
driving-force
atomic wires
electromigration
pseudopotentials
1st-principles
adsorption
physics, condensed matter
We describe a first-principles atomistic approach to calculate the electronic and atomic dynamics of nanoscale conductors under steady-state current flow. The approach is based on a self-consistent solution of the Lippmann-Schwinger equation within the density-functional formalism for a sample connected to two bare metallic electrodes with a finite bias. Three-terminal device geometries can also be described easily using the present approach. The formalism provides the most fundamental quantities to describe the dynamics of the whole system: the self-consistent electronic wave functions. With these, the forces on the atoms are determined according to a Helmann-Feynman-like theorem that takes into account the contribution of the continuum of states as well as of the discrete part of the spectrum. Examples of applications will be given in the case of molecular devices with different anchoring groups at the interface between the molecule and the electrodes. In particular, we find that conductances close to the quantum unit (2e(2)/h) can be achieved with a given molecular structure simply by increasing the atomic number of the anchoring group..
National Science Foundation Grant No. DMR-01-02277
Carilion Biomedical Institute
Oak Ridge Associated Universities
2014-05-07T15:37:09Z
2014-05-07T15:37:09Z
2002-01
2014-04-23
Article - Refereed
Di Ventra, M.; Lang, N. D., "Transport in nanoscale conductors from first principles," Phys. Rev. B 65, 045402 DOI: http://dx.doi.org/10.1103/PhysRevB.65.045402
1098-0121
http://hdl.handle.net/10919/47904
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.65.045402
https://doi.org/10.1103/PhysRevB.65.045402
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/958032022-07-03T06:18:38Zcom_10919_86665com_10919_24211com_10919_5553col_10919_86666col_10919_24287
Online Gambling of Pure Chance: Wager Distribution, Risk Attitude, and Anomalous Diffusion
Scientific Reports
Wang, Xiang-Wen
Pleimling, Michel J.
Center for Soft Matter and Biological Physics
Physics
Online gambling sites offer many different gambling games. In this work we analyse the gambling logs of numerous solely probability-based gambling games and extract the wager and odds distributions. We find that the log-normal distribution describes the wager distribution at the aggregate level. Viewing the gamblers' net incomes as random walks, we study the mean-squared displacement of net income and related quantities and find different diffusive behaviors for different games. We discuss possible origins for the observed anomalous diffusion.
2019-11-19T14:04:37Z
2019-11-19T14:04:37Z
2019-10-11
Article - Refereed
Text
StillImage
14712
http://hdl.handle.net/10919/95803
https://doi.org/10.1038/s41598-019-50168-2
9
31604970
2045-2322
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
application/pdf
application/pdf
Springer Nature
oai:vtechworks.lib.vt.edu:10919/734372022-06-16T17:38:42Zcom_10919_5com_10919_25799com_10919_24464com_10919_24211com_10919_5553col_10919_70873col_10919_24465col_10919_24287
Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report, Volume 4 The DUNE Detectors at LBNF
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Tatar, E.
Tayloe, R.
Taylor, C.
Taylor, D.
Terao, K.
Thiesse, M.
Thomas, J.
Thompson, L. F.
Thomson, M.
Thorn, C.
Thorpe, M.
Tian, X.
Tiedt, D.
Timm, S. C.
Tonazzo, A.
Tope, T.
Topkar, A.
Torres, F. R.
Torti, M.
Tortola, M.
Tortorici, F.
Toups, M.
Touramanis, C.
Tripathi, M.
Tropin, I.
Tsai, Y.
Tsang, K. V.
Tsenov, R.
Tufanli, S.
Tull, C.
Turner, J.
Tzanov, M.
Tziaferi, E.
Uchida, Y.
Urheim, J.
Usher, T.
Vagins, M. R.
Vahle, P.
Valdiviesso, G. A.
Valerio, L.
Vallari, Z.
Valle, J.
VanBerg, R.
Van de Water, R. G.
VanGemmeren, P.
Varanini, F.
Varner, G.
Vasseur, G.
Vaziri, K.
Velev, G.
Ventura, S.
Verdugo, A.
Viant, T.
Vieira, T. V.
Vignoli, C.
Vilela, C.
Viren, B.
Vrba, T.
Wachala, T.
Wahl, D.
Wallbank, M.
Walsh, N.
Wang, B.
Wang, H.
Wang, L.
Wang, T.
Warburton, T. K.
Warner, D.
Wascko, M. O.
Waters, D.
Watson, T. B.
Weber, A.
Weber, M.
Wei, W.
Weinstein, A.
Wells, D.
Wenman, D.
Wetstein, M.
White, A.
Whitehead, L.
Whittington, D.
Wilking, M.
Willhite, J.
Wilson, P.
Wilson, R. J.
Winslow, L.
Wittich, P.
Wojcicki, S.
Wong, H. H.
Wood, K.
Worcester, E.
Worcester, M.
Wu, S.
Xin, T.
Yanagisawa, C.
Yang, S.
Yang, T.
Yarritu, K.
Ye, J.
Yeh, M.
Yershov, N.
Yonehara, K.
Yu, B.
Yu, J.
Zalesak, J.
Zalewska, A.
Zamorano, B.
Zang, L.
Zani, A.
Zavala, G.
Zeller, Geralyn P.
Zhang, C.
Zhang, C.
Zimmerman, E. D.
Zito, M.
Zwaska, R.
Center for Neutrino Physics
Physics
physics.ins-det
hep-ex
A description of the proposed detector(s) for DUNE at LBNF
2016-11-14T19:23:23Z
2016-11-14T19:23:23Z
2016-01
Report
http://hdl.handle.net/10919/73437
http://arxiv.org/abs/1601.02984v1
In Copyright
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oai:vtechworks.lib.vt.edu:10919/819512023-06-13T19:05:03Zcom_10919_8195com_10919_25799com_10919_86665com_10919_24211com_10919_5553com_10919_19035com_10919_5539com_10919_24230com_10919_5532col_10919_18629col_10919_86666col_10919_24290col_10919_24305col_10919_24287
Chromosome–nuclear envelope attachments affect interphase chromosome territories and entanglement
Epigenetics & Chromatin
Kinney, Nicholas A.
Sharakhov, Igor V.
Onufriev, Alexey V.
Center for Soft Matter and Biological Physics
Computer Science
Entomology
Physics
Background
It is well recognized that the interphase chromatin of higher eukaryotes folds into non-random configurations forming territories within the nucleus. Chromosome territories have biologically significant properties, and understanding how these properties change with time during lifetime of the cell is important. Chromosome–nuclear envelope (Chr–NE) interactions play a role in epigenetic regulation of DNA replication, repair, and transcription. However, their role in maintaining chromosome territories remains unclear.
Results
We use coarse-grained molecular dynamics simulations to study the effects of Chr–NE interactions on the dynamics of chromosomes within a model of the Drosophila melanogaster regular (non-polytene) interphase nucleus, on timescales comparable to the duration of interphase. The model simulates the dynamics of chromosomes bounded by the NE. Initially, the chromosomes in the model are prearranged in fractal-like configurations with physical parameters such as nucleus size and chromosome persistence length taken directly from experiment. Time evolution of several key observables that characterize the chromosomes is quantified during each simulation: chromosome territories, chromosome entanglement, compactness, and presence of the Rabl (polarized) chromosome arrangement. We find that Chr–NE interactions help maintain chromosome territories by slowing down and limiting, but not eliminating, chromosome entanglement on biologically relevant timescales. At the same time, Chr–NE interactions have little effect on the Rabl chromosome arrangement as well as on how chromosome compactness changes with time. These results are rationalized by simple dimensionality arguments, robust to model details. All results are robust to the simulated activity of topoisomerase, which may be present in the interphase cell nucleus.
Conclusions
Our study demonstrates that Chr–NE attachments may help maintain chromosome territories, while slowing down and limiting chromosome entanglement on biologically relevant timescales. However, Chr–NE attachments have little effect on chromosome compactness or the Rabl chromosome arrangement.
Published version
2018-01-29T13:07:31Z
2018-01-29T13:07:31Z
2018-01-22
2018-01-28T09:46:21Z
Article - Refereed
Text
Epigenetics & Chromatin. 2018 Jan 22;11(1):3
http://hdl.handle.net/10919/81951
https://doi.org/10.1186/s13072-018-0173-5
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
The Author(s)
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oai:vtechworks.lib.vt.edu:10919/251202020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
On the C-n/Z(m) fractional branes
Journal of Mathematical Physics
Karp, Robert L.
Physics
Virginia Tech
geometry
membrane theory
electric-magnetic duality
mckay correspondence
mirrorsymmetry
categories
singularities
equivalences
varieties
monodromy
manifolds
sheaves
We construct several geometric representatives for the C-n/Z(m) fractional branes on either a partially or the completely resolved orbifold. In the process we use large radius and conifold-type monodromies and provide a strong consistency check. In particular, for C-3/Z(5) we give three different sets of geometric representatives. We also find the explicit Seiberg duality which connects our fractional branes to the ones given by the McKay correspondence.
2014-01-23T13:49:08Z
2014-01-23T13:49:08Z
2009-02
2014-01-25
Article - Refereed
Karp, Robert L., "On the C-n/Z(m) fractional branes," J. Math. Phys. 50, 022304 (2009); http://dx.doi.org/10.1063/1.3072696
0022-2488
http://hdl.handle.net/10919/25120
http://scitation.aip.org/content/aip/journal/jmp/50/2/10.1063/1.3072696
https://doi.org/10.1063/1.3072696
en_US
In Copyright
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AIP Publishing
oai:vtechworks.lib.vt.edu:10919/731252024-03-13T14:10:09Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Spatial rock-paper-scissors models with inhomogeneous reaction rates
Physical Review E
He, Q.
Mobilia, M.
Täuber, Uwe C.
Physics
Physics, Fluids & Plasmas
Physics, Mathematical
Physics
COMPETITION
BIODIVERSITY
ORGANIZATION
POPULATIONS
STRATEGIES
SURVIVAL
DYNAMICS
PROMOTES
SYSTEMS
GAMES
Published version
2016-09-30T13:16:36Z
2016-09-30T13:16:36Z
2010-11-04
Article - Refereed
1539-3755
http://hdl.handle.net/10919/73125
https://doi.org/10.1103/PhysRevE.82.051909
82
5
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000283845700006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/750932024-03-13T14:09:32Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Wave-function vortex attachment via matrix products: Application to atomic Fermi gases in flat spin-orbit bands
Physical Review B
Scarola, Vito W.
Physics
Physics, Condensed Matter
Physics
INCOMPRESSIBLE QUANTUM FLUID
RENORMALIZATION-GROUP
MONTE-CARLO
LANDAU-LEVELS
SYSTEMS
STATES
Published version
2017-02-20T19:45:35Z
2017-02-20T19:45:35Z
2014-03-31
Article - Refereed
1098-0121
http://hdl.handle.net/10919/75093
https://doi.org/10.1103/PhysRevB.89.115136
89
11
Scarola, VW [0000-0002-8653-2723]
English
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000333558200004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1
In Copyright
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/732502024-03-13T14:10:08Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
The Higgs mass and the emergence of new physics
Physics Letters B
Aydemir, U.
Minic, Djordje
Takeuchi, Tatsu
Physics
Astronomy & Astrophysics
Physics, Nuclear
Physics, Particles & Fields
Physics
PHYSICS, MULTIDISCIPLINARY
PARITY
SUPERCONNECTIONS
VIOLATION
MODELS
FIELDS
BOSON
LHC
Published version
2016-10-18T23:42:08Z
2016-10-18T23:42:08Z
2013-07-23
Article - Refereed
0370-2693
http://hdl.handle.net/10919/73250
https://doi.org/10.1016/j.physletb.2013.06.044
724
4-5
English
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301 - 305 (5) page(s)
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Elsevier
oai:vtechworks.lib.vt.edu:10919/1009172022-06-16T17:38:37Zcom_10919_5com_10919_25799com_10919_86665com_10919_24211com_10919_5553col_10919_70873col_10919_86666col_10919_24287
Parallel Temperature Interfaces in the Katz-Lebowitz-Spohn Driven Lattice Gas
Mukhamadiarov, Ruslan I.
Priyanka
Täuber, Uwe C.
Physics
Center for Soft Matter and Biological Physics
cond-mat.stat-mech
We explore a variant of the Katz-Lebowitz-Spohn (KLS) driven lattice gas in two dimensions, where the lattice is split into two regions that are coupled to heat baths with distinct temperatures. The temperature boundaries are oriented parallel to the external particle drive. If the hopping rates at the interfaces satisfy particle-hole symmetry, the current difference across them generates a vector flow diagram akin to a vortex sheet. We have studied the finite-size scaling of the particle density fluctuations in both temperature regions, and observed that it is controlled by the respective temperature values. If the colder subsystem is maintained at the KLS critical temperature, while the hotter subsystem's temperature is set much higher, the interface current greatly suppresses particle exchange between the two regions. As a result of the ensuing effective subsystem decoupling, strong fluctuations persist in the critical region, whence the particle density fluctuations scale with the KLS critical exponents. However, if both temperatures are set well above the critical temperature, the particle density fluctuations scale according to the totally asymmetric exclusion process (TASEP). We have also measured the entropy production rate in both subsystems; it displays intriguing algebraic decay in the critical region, while it saturates quickly at a small but non-zero level in the hotter region. We have also considered another possible choice of the hopping rates across the temperature interfaces that explicitly breaks particle-hole symmetry. In that case the boundary rates induce a net particle flux across the interfaces that displays power-law behavior, until ultimately the particle exclusion constraints generate a clogging transition to an inert state.
20 pages, 9 figures
2020-11-23T14:24:32Z
2020-11-23T14:24:32Z
2020-10-08
2020-11-23T14:24:31Z
Article
http://hdl.handle.net/10919/100917
Tauber, Uwe [0000-0001-7854-2254]
In Copyright (InC)
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oai:vtechworks.lib.vt.edu:10919/731192024-03-13T14:10:09Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Influence of local carrying capacity restrictions on stochastic predator-prey models
Journal of Physics-Condensed Matter
Washenberger, M. J.
Mobilia, M.
Täuber, Uwe C.
Physics
Physics, Condensed Matter
Physics
LOTKA-VOLTERRA MODEL
LATTICE-GAS MODEL
OSCILLATORY BEHAVIOR
PHASE-TRANSITIONS
SYSTEM
Published version
2016-09-30T13:13:41Z
2016-09-30T13:13:41Z
2007-02-14
Article - Refereed
0953-8984
http://hdl.handle.net/10919/73119
https://doi.org/10.1088/0953-8984/19/6/065139
19
6
English
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In Copyright
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IOP
oai:vtechworks.lib.vt.edu:10919/1056382021-10-23T07:11:56Zcom_10919_8195com_10919_25799com_10919_86665com_10919_24211com_10919_5553col_10919_78882col_10919_86666col_10919_24287
Dynein-Inspired Multilane Exclusion Process with Open Boundary Conditions
Entropy
Nandi, Riya
Täuber, Uwe C.
Priyanka
Motivated by the sidewise motions of dynein motors shown in experiments, we use a variant of the exclusion process to model the multistep dynamics of dyneins on a cylinder with open ends. Due to the varied step sizes of the particles in a quasi-two-dimensional topology, we observe the emergence of a novel phase diagram depending on the various load conditions. Under high-load conditions, our numerical findings yield results similar to the TASEP model with the presence of all three standard TASEP phases, namely the low-density (LD), high-density (HD), and maximal-current (MC) phases. However, for medium- to low-load conditions, for all chosen influx and outflux rates, we only observe the LD and HD phases, and the maximal-current phase disappears. Further, we also measure the dynamics for a single dynein particle which is logarithmically slower than a TASEP particle with a shorter waiting time. Our results also confirm experimental observations of the dwell time distribution: The dwell time distribution for dyneins is exponential in less crowded conditions, whereas a double exponential emerges under overcrowded conditions.
Published version
2021-10-22T14:13:15Z
2021-10-22T14:13:15Z
2021-10-14
2021-10-22T13:56:02Z
Article - Refereed
Text
Nandi, R.; Täuber, U.C.; Priyanka. Dynein-Inspired Multilane Exclusion Process with Open Boundary Conditions. Entropy 2021, 23, 1343.
http://hdl.handle.net/10919/105638
https://doi.org/10.3390/e23101343
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
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MDPI
oai:vtechworks.lib.vt.edu:10919/1158012023-07-22T07:12:30Zcom_10919_8195com_10919_25799com_10919_24211com_10919_5553col_10919_18629col_10919_24287
Reconstruction of interactions in the ProtoDUNE-SP detector with Pandora
The European Physical Journal C
Abud, A. A.
Abi, B.
Acciarri, R.
Acero, M. A.
Adames, M. R.
Adamov, G.
Adamowski, M.
Adams, D.
Adinolfi, M.
Adriano, C.
Aduszkiewicz, A.
Aguilar, J.
Ahmad, Z.
Ahmed, J.
Aimard, B.
Akbar, F.
Ali-Mohammadzadeh, B.
Allison, K.
Monsalve, S. A.
AlRashed, M.
Alt, C.
Alton, A.
Alvarez, R.
Amedo, P.
Anderson, J.
Andreopoulos, C.
Andreotti, M.
Andrews, M.
Andrianala, F.
Andringa, S.
Anfimov, N.
Ankowski, A.
Antoniassi, M.
Antonova, M.
Antoshkin, A.
Antusch, S.
Aranda-Fernandez, A.
Arellano, L.
Arnold, L. O.
Arroyave, M. A.
Asaadi, J.
Asquith, L.
Aurisano, A.
Aushev, V.
Autiero, D.
Ayala Lara, V.
Ayala-Torres, M.
Azfar, F.
Back, A.
Back, H.
Back, J. J.
Backhouse, C.
Bagaturia, I.
Bagby, L.
Balashov, N.
Balasubramanian, S.
Baldi, P.
Baller, B.
Bambah, B.
Barao, F.
Barenboim, G.
Barker, G.
Barkhouse, W.
Barnes, C.
Barr, G.
Monarca, J. B.
Barros, A.
Barros, N.
Barrow, J. L.
Basharina-Freshville, A.
Bashyal, A.
Basque, V.
Batchelor, C.
Battat, J.
Battisti, F.
Bay, F.
Bazetto, M. C. Q.
Bazo Alba, J. L.
Beacom, J. F.
Bechetoille, E.
Behera, B.
das Chagas, E. B. B.
Bellantoni, L.
Bellettini, G.
Bellini, V.
Beltramello, O.
Benekos, N.
Benitez Montiel, C.
Bento Neves, F.
Berger, J.
Berkman, S.
Bernardini, P.
Berner, R. M.
Bersani, A.
Bertolucci, S.
Betancourt, M.
Rodríguez, A. B.
Bevan, A.
Bezawada, Y.
Bezerra, A. T.
Bezerra, T. J.
Bhardwaj, A.
Bhatnagar, V.
Bhattacharjee, M.
Bhattarai, D.
Bhuller, S.
Bhuyan, B.
Biagi, S.
Bian, J.
Biassoni, M.
Biery, K.
Bilki, B.
Bishai, M.
Bitadze, A.
Blake, A.
Blaszczyk, F. D. M.
Blazey, G. C.
Blucher, E.
Boissevain, J.
Bolognesi, S.
Bolton, T.
Bomben, L.
Bonesini, M.
Bonilla-Diaz, C.
Bonini, F.
Booth, A.
Boran, F.
Bordoni, S.
Borkum, A.
Bostan, N.
Bour, P.
Boyden, D.
Bracinik, J.
Braga, D.
Brailsford, D.
Branca, A.
Brandt, A.
Bremer, J.
Brew, C.
Brice, S. J.
Brizzolari, C.
Bromberg, C.
Brooke, J.
Bross, A.
Brunetti, G.
Brunetti, M.
Buchanan, N.
Budd, H.
Butorov, I.
Cagnoli, I.
Cai, T.
Caiulo, D.
Calabrese, R.
Calafiura, P.
Calcutt, J.
Calin, M.
Calvez, S.
Calvo, E.
Caminata, A.
Campos Benitez, A.
Caratelli, D.
Carber, D.
Carceller, J. M.
Carini, G.
Carlus, B.
Carneiro, M. F.
Carniti, P.
Terrazas, I. C.
Carranza, H.
Carroll, T.
Forero, J. F. C.
Castillo, A.
Castromonte, C.
Catano-Mur, E.
Cattadori, C.
Cavalier, F.
Cavallaro, G.
Cavanna, F.
Centro, S.
Cerati, G.
Cervelli, A.
Cervera Villanueva, A.
Chalifour, M.
Chappell, A.
Chardonnet, E.
Charitonidis, N.
Chatterjee, A.
Chattopadhyay, S.
Chavarry Neyra, M. S.
Chen, H.
Chen, M.
Chen, Y.
Chen, Z.
Chen-Wishart, Z.
Cheon, Y.
Cherdack, D.
Chi, C.
Childress, S.
Chirco, R.
Chiriacescu, A.
Cho, K.
Choate, S.
Chokheli, D.
Chong, P. S.
Christensen, A.
Christian, D.
Christodoulou, G.
Chukanov, A.
Chung, M.
Church, E.
Cicero, V.
Clarke, P.
Cline, G.
Coan, T. E.
Cocco, A. G.
Coelho, J.
Collot, J.
Colton, N.
Conley, E.
Conley, R.
Conrad, J.
Convery, M.
Copello, S.
Cova, P.
Cremaldi, L.
Cremonesi, L.
Crespo-Anadón, J. I.
Crisler, M.
Cristaldo, E.
Crnkovic, J.
Cross, R.
Cudd, A.
Cuesta, C.
Cui, Y.
Cussans, D.
Dai, J.
Dalager, O.
Da Motta, H.
Da Silva Peres, L.
David, C.
David, Q.
Davies, G. S.
Davini, S.
Dawson, J.
De, K.
De, S.
Debbins, P.
De Bonis, I.
Decowski, M.
De Gouvea, A.
De Holanda, P. C.
De Icaza Astiz, I. L.
Deisting, A.
De Jong, P.
Delbart, A.
De Leo, V.
Delepine, D.
Delgado, M.
Dell’Acqua, A.
Delmonte, N.
De Lurgio, P.
De Mello Neto, J. R.
DeMuth, D. M.
Dennis, S.
Densham, C.
Deptuch, G. W.
De Roeck, A.
De Romeri, V.
De Souza, G.
Devi, R.
Dharmapalan, R.
Dias, M.
Diaz, J.
Díaz, F.
Di Capua, F.
Di Domenico, A.
Di Domizio, S.
Di Giulio, L.
Ding, P.
Di Noto, L.
Dirkx, G.
Distefano, C.
Diurba, R.
Diwan, M.
Djurcic, Z.
Doering, D.
Dolan, S.
Dolek, F.
Dolinski, M.
Domine, L.
Donon, Y.
Douglas, D.
Dragone, A.
Drake, G.
Drielsma, F.
Duarte, L.
Duchesneau, D.
Duffy, K.
Dunne, P.
Dutta, B.
Duyang, H.
Dvornikov, O.
Dwyer, D.
Dyshkant, A.
Eads, M.
Earle, A.
Edmunds, D.
Eisch, J.
Emberger, L.
Emery, S.
Englezos, P.
Ereditato, A.
Erjavec, T.
Escobar, C.
Escudero Sanchez, L.
Eurin, G.
Evans, J. J.
Ewart, E.
Ezeribe, A. C.
Fahey, K.
Falcone, A.
Fani’, M.
Farnese, C.
Farzan, Y.
Fedoseev, D.
Felix, J.
Feng, Y.
Fernandez-Martinez, E.
Fernandez Menendez, P.
Ferraro, F.
Fields, L.
Filip, P.
Filthaut, F.
Fine, R.
Fiorillo, G.
Fiorini, M.
Fischer, V.
Fitzpatrick, R. S.
Flanagan, W.
Fleming, B.
Flight, R.
Fogarty, S.
Foreman, W.
Fowler, J.
Fox, W.
Franc, J.
Francis, K.
Franco, D.
Freeman, J.
Freestone, J.
Fried, J.
Friedland, A.
Fuess, S.
Furic, I. K.
Furman, K.
Furmanski, A. P.
Gabrielli, A.
Gago, A.
Gallagher, H.
Gallas, A.
Gallego-Ros, A.
Gallice, N.
Galymov, V.
Gamberini, E.
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The Pandora Software Development Kit and algorithm libraries provide pattern-recognition logic essential to the reconstruction of particle interactions in liquid argon time projection chamber detectors. Pandora is the primary event reconstruction software used at ProtoDUNE-SP, a prototype for the Deep Underground Neutrino Experiment far detector. ProtoDUNE-SP, located at CERN, is exposed to a charged-particle test beam. This paper gives an overview of the Pandora reconstruction algorithms and how they have been tailored for use at ProtoDUNE-SP. In complex events with numerous cosmic-ray and beam background particles, the simulated reconstruction and identification efficiency for triggered test-beam particles is above 80% for the majority of particle type and beam momentum combinations. Specifically, simulated 1 GeV/c charged pions and protons are correctly reconstructed and identified with efficiencies of 86.1±0.6% and 84.1±0.6%, respectively. The efficiencies measured for test-beam data are shown to be within 5% of those predicted by the simulation.
Published version
2023-07-21T12:37:47Z
2023-07-21T12:37:47Z
2023-07-14
2023-07-16T03:10:38Z
Article - Refereed
Text
The European Physical Journal C. 2023 Jul 14;83(7):618
http://hdl.handle.net/10919/115801
https://doi.org/10.1140/epjc/s10052-023-11733-2
en
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http://creativecommons.org/licenses/by/4.0/
The Author(s)
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oai:vtechworks.lib.vt.edu:10919/252602023-06-21T19:15:17Zcom_10919_18738com_10919_5539com_10919_24211com_10919_5553col_10919_23145col_10919_24287
Highly sensitive optical response of optical fiber long period gratings to nanometer-thick ionic self-assembled multilayers
Applied Physics Letters
Wang, Zhiyong
Heflin, James R.
Stolen, Rogers H.
Ramachandran, Siddharth
Electrical and Computer Engineering
Physics
Virginia Tech
Few-mode fibers
Dependence
Films
Physics
Ionic self-assembled multilayers deposited on long period fiber gratings (LPGs) yield dramatic resonant-wavelength shifts, even with nanometer-thick films. Fine control of the refractive index and the thickness of these films was achieved by altering the relative fraction of the anionic and cationic materials combined with layer-by-layer deposition. We demonstrate the feasibility of this highly controllable deposition technique for fine-tuning grating properties. In addition a variety of biological and chemical sensing agents can easily be incorporated into these films, which makes this an attractive platform for realization of high-performance LPG-based sensors. (c) 2005 American Institute of Physics.
2014-02-03T15:57:16Z
2014-02-03T15:57:16Z
2005-05-01
2014-01-24
Article - Refereed
Text
Wang, ZY; Heflin, JR; Stolen, RH; et al., "Highly sensitive optical response of optical fiber long period gratings to nanometer-thick ionic self-assembled multilayers," Appl. Phys. Lett. 86, 223104 (2005); http://dx.doi.org/10.1063/1.1940735
0003-6951
http://hdl.handle.net/10919/25260
http://scitation.aip.org/content/aip/journal/apl/86/22/10.1063/1.1940735
https://doi.org/10.1063/1.1940735
en
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
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Hyper-Kamiokande Physics Opportunities
Proceedings, 2013 Community Summer Study on the Future of U.S. Particle Physics: Snowmass on the Mississippi (CSS2013): Minneapolis, MN, USA, July 29-August 6, 2013
Kearns, E.
Hyper-Kamiokande Working Group
Physics
We propose the Hyper-Kamiokande (Hyper-K) detector as a next generation underground water Cherenkov detector [1]. It will serve as a far detector of a long baseline neutrino oscillation experiment envisioned for the upgraded J-PARC beam, and as a detector capable of observing, far beyond the sensitivity of the Super-Kamiokande (Super-K) detector, proton decays, atmospheric neutrinos, and neutrinos from astro- physical origins. The current baseline design of Hyper-K is based on the highly suc- cessful Super-K detector, taking full advantage of a well-proven technology. Hyper-K consists of two cylindrical tanks lying side-by-side, the outer dimensions of each tank being 48(W) 54(H) 250(L) m3. The total (fiducial) mass of the detector is 0.99 (0.56) million metric tons, which is about 20 (25) times larger than that of Super-K. A proposed location for Hyper-K is about 8 km south of Super-K (and 295 km away from J-PARC) at an underground depth of 1,750 meters water equivalent (m.w.e.). The inner detector region of the Hyper-K detector is viewed by 99,000 20-inch PMTs, corresponding to the PMT density of 20% photo-cathode coverage (one half of that of Super-K).
The Hyper-K project is envisioned to be completely open to the international community. The current working group contains members from Canada, Japan, Korea, Spain, Switzerland, Russia, the United Kingdom and the United States. The United States physics community has a long history of making contributions to the neutrino physics program in Japan. In Kamiokande, Super-Kamiokande, K2K and T2K, US physicists have played important roles building and operating beams, near detectors, and large underground water Cherenkov detectors. This set of three one- page whitepapers prepared for the US Snowmass process describes the opportunities for future physics discoveries at the Hyper-K facility with beam, atmospheric and astrophysical neutrinos.
collaboration: Hyper-Kamiokande Working Group archiveprefix: arXiv primaryclass: hep-ex slaccitation: %%CITATION = ARXIV:1309.0184;%%
2018-01-10T01:40:04Z
2018-01-10T01:40:04Z
2013
Conference proceeding
http://hdl.handle.net/10919/81657
http://inspirehep.net/record/1252067/files/arXiv:1309.0184.pdf
In Copyright
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Search for rare decays B+ -> Ds((*)) + eta, D-s ((*)) + (K)over-bar(0), D+eta, and D+K-0
Physical Review D
Kumar, M.
Bhardwaj, V.
Lalwani, K.
Adachi, I.
Aihara, H.
Asner, D. M.
Aushev, T.
Babu, V.
Behera, P.
Belous, K.
Bennett., J.
Bessner., M.
Bhuyan., B.
Bilka., T.
Bobrov, A.
Bodrov, D.
Bonvicini, G.
Borah, J.
Bozek, A.
Bracko, M.
Branchini, P.
Browder, T. E.
Budano, A.
Campajola, M.
Cervekov, D.
Chang, M. -C.
Chang, P.
Cheon, B. G.
Chilikin, K.
Cho, H. E.
Cho, K.
Cho, S. -J.
Choi, S. -K.
Choi, Y.
Choudhury, S.
Cinabro, D.
Das, S.
Dash, N.
De Pietro, G.
Dhamija, R.
Di Capua, F.
Dingfelder, J.
Dolezal, Z.
Dong, T. V.
Dossett, D.
Epifanov, D.
Ferlewicz, D.
Fulsom, B. G.
Garg, R.
Gaur, V.
Garmash, A.
Giri, A.
Goldenzweig, P.
Graziani, E.
Gu, T.
Guan, Y.
Gudkova, K.
Hadjivasiliou, C.
Hara, T.
Hayasaka, K.
Hayashii, H.
Hou, W. -S.
Hsu, C. -L.
Iijima, T.
Inami, K.
Ipsita, N.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Jacobs, W. W.
Jang, E. -J.
Ji, Q. P.
Jia, S.
Jin, Y.
Joo, K. K.
Kalita, D.
Kang, K. H.
Kiesling, C.
Kim, C. H.
Kim, D. Y.
Kim, K. -H.
Kim, Y. -K.
Kinoshita, K.
Kodys, P.
Korobov, A.
Korpar, S.
Kovalenko, E.
Krizan, P.
Krokovny, P.
Kumar, R.
Kumara, K.
Kwon, Y. -J.
Lam, T.
Lange, J. S.
Laurenza, M.
Lee, S. C.
Li, C. H.
Li, J.
Li, L. K.
Li, Y.
Li, Y. B.
Gioi, L. Li
Libby, J.
Lieret, K.
Liventsev, D.
Masuda, M.
Matsuda, T.
Matvienko, D.
Maurya, S. K.
Meier, F.
Merola, M.
Metzner, F.
Miyabayashi, K.
Mizuk, R.
Mohanty, G. B.
Mrvar, M.
Nakamura, I.
Nakao, M.
Natkaniec, Z.
Natochii, A.
Nayak, L.
Nayak, M.
Nisar, N. K.
Nishida, S.
Ogawa, S.
Ono, H.
Oskin, P.
Pakhlov, P.
Pakhlova, G.
Pardi, S.
Park, H.
Park, S. -H.
Passeri, A.
Patra, S.
Paul, S.
Pedlar, T. K.
Pestotnik, R.
Piilonen, L. E.
Podobnik, T.
Prencipe, E.
Prim, M. T.
V. Purohit, M.
Rout, N.
Russo, G.
Sandilya, S.
Sangal, A.
Santelj, L.
Savinov, V.
Schnell, G.
Schueler, J.
Schwanda, C.
Seino, Y.
Senyo, K.
Sevior, M. E.
Shapkin, M.
Sharma, C.
Shen, C. P.
Shiu, J. -G.
Singh, J. B.
Solovieva, E.
Staric, M.
Stottler, Z. S.
Strube, J. F.
Sumihama, M.
Sumiyoshi, T.
Takizawa, M.
Tamponi, U.
Tanida, K.
Tenchini, F.
Trabelsi, K.
Tsuboyama, T.
Uchida, M.
Unno, Y.
Uno, S.
van Tonder, R.
Varner, G.
Varvell, K. E.
Vinokurova, A.
Waheed, E.
Wang, E.
Wang, M. -Z.
Wang, X. L.
Watanabe, M.
Watanuki, S.
Werbycka, O.
Wiechczynski, J.
Won, E.
Yabsley, B. D.
Yan, W.
Yang, S. B.
Yelton, J.
Yin, J. H.
Yuan, C. Z.
Yusa, Y.
Zhai, Y.
Zhang, Z. P.
Zhilich, V.
Zhukova, V.
Physics
CP-VIOLATION
We present a study of rare decay modes B+→Ds+h0, B+→Ds∗+h0, and B+→D+h0, where h0 denotes the neutral meson η or K0, using a data sample of (772±10)×106 BB¯ events produced at the ϒ(4S) resonance. The data were collected by the Belle detector operating at the asymmetric-energy KEKB collider. We find no evidence for these decays, so we set upper limits at the 90% confidence level on the branching fractions of B+→Ds+h0, Ds∗+h0, and D+h0 decay modes. Along with these rare decay modes, we report improved measurements of the color-suppressed decay branching fractions B(B¯0→D0η)=(26.6±1.2±2.1)×10-5 and B(B¯0→D0K̄0)=(5.6±0.5±0.2)×10-5. The first and second quoted uncertainties are statistical and systematic, respectively.
Published version
2024-01-22T13:44:17Z
2024-01-22T13:44:17Z
2023-02-16
Article - Refereed
Article
Journal
Text
ARTN L031101 (Article number)
2470-0010
https://hdl.handle.net/10919/117452
https://doi.org/10.1103/PhysRevD.107.L031101
107
3
Piilonen, Leo [0000-0001-6836-0748]
2470-0029
en
In Copyright
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7 page(s)
application/pdf
application/pdf
American Physical Society
oai:vtechworks.lib.vt.edu:10919/251582021-04-27T15:17:50Zcom_10919_24211com_10919_5553col_10919_24287
Characterization of electrical conductivity in a zeolitelike material
Applied Physics Letters
Soghomonian, Victoria G.
Heremans, Jean J.
Physics
Virginia Tech
supercapacitors
capacitors
Physics
We present the electrical characterization of a zeolitelike oxo-vanadium arsenate framework. The experimentally obtained electronic and ionic conductivities and their interactions are discussed. Further, we investigate the potential use of electrically conducting zeolitelike materials in electrical energy storage applications, in light of the material's structural and electronic characteristics. (C) 2009 American Institute of Physics. [doi:10.1063/1.3251070]
National Science Foundation_DMR-0943971
2014-01-28T18:00:11Z
2014-01-28T18:00:11Z
2009-10
2014-01-17
Article - Refereed
Soghomonian, V.; Heremans, J. J., "Characterization of electrical conductivity in a zeolitelike material," Appl. Phys. Lett. 95, 152112 (2009); http://dx.doi.org/10.1063/1.3251070
0003-6951
http://hdl.handle.net/10919/25158
http://scitation.aip.org/content/aip/journal/apl/95/15/10.1063/1.3251070
https://doi.org/10.1063/1.3251070
en_US
In Copyright
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AIP Publishing
oai:vtechworks.lib.vt.edu:10919/251562020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Aluminum plasmonic nanostructures for improved absorption in organic photovoltaic devices
Applied Physics Letters
Kochergin, V.
Neely, L.
Jao, C. Y.
Robinson, Hans D.
Physics
solar-cells
nanoparticles
constants
Physics
We model the absorption enhancement in organic photovoltaic devices induced by incorporating Al, Ag, and Au nanoparticles in the active layer. We find that Al nanoparticles should yield significantly greater enhancement than Ag or Au. This is because the much higher plasma frequency of Al ensures a better overlap between plasmon resonance and absorption band of organic semiconductors. Our predictions are verified experimentally by demonstrating enhanced absorbance in a poly(3-hexylthiophene-2,5-diyl): [6,6]-phenyl C61 butyric acid methyl ester layer with embedded functionalized Al nanoparticles. (C) 2011 American Institute of Physics. [doi:10.1063/1.3574091]
AFOSR STTR FA9550-10-C-0059
2014-01-28T18:00:11Z
2014-01-28T18:00:11Z
2011-03
2014-01-17
Article - Refereed
Kochergin, Vladimir; Neely, Lauren; Jao, Chih-Yu; et al., "Aluminum plasmonic nanostructures for improved absorption in organic photovoltaic devices," Appl. Phys. Lett. 98, 133305 (2011); http://dx.doi.org/10.1063/1.3574091
0003-6951
http://hdl.handle.net/10919/25156
http://scitation.aip.org/content/aip/journal/apl/98/13/10.1063/1.3574091
https://doi.org/10.1063/1.3574091
en_US
In Copyright
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AIP Publishing
oai:vtechworks.lib.vt.edu:10919/930442022-07-03T06:18:39Zcom_10919_24211com_10919_5553col_10919_24287
Search for the B -> Y(4260)K, Y(4260) -> J/psi pi(+)pi(-) decays
Physical Review D
Garg, R.
Bhardwaj, V.
Singh, J. B.
Adachi, I.
Ahn, J. K.
Aihara, H.
Al Said, S.
Asner, D. M.
Aulchenko, V.
Aushev, T.
Ayad, R.
Babu, V.
Bahinipati, S.
Bansal, V.
Beleno, C.
Bilka, T.
Biswal, J.
Bobrov, A.
Bozek, A.
Bračko, M.
Cao, L.
Cervenkov, D. T.
Chen, A.
Cheon, B. G.
Chilikin, K.
Cho, H. E.
Cho, K.
Choi, S.-K.
Choi, Y.
Cinabro, D.
Cunliffe, S.
Dash, N.
Di Carlo, S.
Doležal, Z.
Dong, T. V.
Drasal, Z.
Eidelman, S.
Fast, J. E.
Fulsom, B. G.
Gaur, V.
Gabyshev, N.
Garmash, A.
Giri, A.
Golob, B.
Grzymkowska, O.
Haba, J.
Hayasaka, K.
Hayashii, H.
Hou, W.-S.
Hsu, C.-L.
Inami, K.
Inguglia, G.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Iwasaki, Y.
Jacobs, W. W.
Jeon, H. B.
Jia, S.
Jin, Y.
Joffe, D.
Joo, K. K.
Julius, T.
Kaliyar, A. B.
Kawasaki, T.
Kichimi, H.
Kim, D. Y.
Kim, J. B.
Kim, S. H.
Kinoshita, K.
Kodyš, P.
Korpar, S.
Kotchetkov, D.
Križan, P.
Kroeger, R.
Krokovny, P.
Kuhr, T.
Kumar, R.
Kwon, Y-J.
Lange, J. S.
Lee, J. K.
Lee, S. C.
Li, C. H.
Li, L. K.
Li, Y. B.
Gioi, L. Li
Libby, J.
Liventsev, D.
Lu, P-C.
Luo, T.
MacNaughton, J.
Masuda, M.
Matsuda, T.
Matvienko, D.
Merola, M.
Miyabayashi, K.
Miyata, H.
Mizuk, R.
Mohanty, G. B.
Mori, T.
Mussa, R.
Nakao, M.
Nath, K. J.
Nayak, M.
Nishida, S.
Nishimura, K.
Ogawa, S.
Ono, H.
Onuki, Y.
Pakhlov, P.
Pakhlova, G.
Pal, B.
Pardi, S.
Patra, S.
Paul, S.
Pedlar, T. K.
Pestotnik, R.
Piilonen, Leo E.
Popov, V.
Prasanth, K.
Prencipe, E.
Resmi, P. K.
Rostomyan, A.
Russo, G.
Sakai, Y.
Salehi, M.
Sandilya, S.
Sanuki, T.
Schneider, O.
Schnell, G.
Schueler, J.
Schwanda, C.
Seino, Y.
Senyo, K.
Sevior, M. E.
Shebalin, V.
Shen, C. P.
Shibata, T. A.
Shiu, J-G.
Sokolov, A.
Solovieva, E.
Starič, M.
Stottler, Z. S.
Sumihama, M.
Sumiyoshi, T.
Takizawa, M.
Tanida, K.
Tenchini, F.
Trabelsi, K.
Uchida, M.
Uglov, T.
Unno, Y.
Uno, S.
Usov, Y.
Van Tonder, R.
Varner, G.
Varvell, K. E.
Waheed, E.
Wang, B.
Wang, C. H.
Wang, M-Z.
Wang, P.
Wang, X. L.
Watanabe, M.
Won, E.
Yang, S. B.
Ye, H.
Yelton, J.
Yin, J. H.
Yuan, C. Z.
Zhang, Z. P.
Zhilich, V.
Zhukova, V.
Zhulanov, V.
Physics
Belle Collaboration
We report the results of a search for the B -> Y(4260)K, Y(4260) -> J/psi pi(+)pi thorn p-decays. This study is based on a data sample corresponding to an integrated luminosity of 711 fb(-1), collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We investigate the J/psi pi(+)pi(-) thorn p-invariant mass distribution in the range 4.0 to 4.6 GeV/c(2) using both B+ -> J/psi pi(+)pi K--(+) and B-0 -> J/psi pi(+)pi K--(S)0 decays. We find excesses of events above the background levels, with significances of 2.1 and 0.9 standard deviations for charged and neutral B -> Y(4260)K decays, respectively, taking into account the systematic uncertainties. These correspond to upper limits on the product of branching fractions, B(B+ -> Y(4260)K+) x B(Y(4260) -> J/psi pi(+)pi(-)) < 1.4 x 10(-5) and B(B-0 -> Y(4260)K-0) x B(Y(4260) -> J/psi pi(+)pi(-)) < 1.7 x 10(-5) at the 90% confidence level.
Public domain – authored by a U.S. government employee
2019-08-13T12:50:17Z
2019-08-13T12:50:17Z
2019-04-12
Article - Refereed
Text
StillImage
2470-0010
71102
http://hdl.handle.net/10919/93044
https://doi.org/10.1103/PhysRevD.99.071102
99
7
2470-0029
en
Creative Commons CC0 1.0 Universal Public Domain Dedication
http://creativecommons.org/publicdomain/zero/1.0/
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oai:vtechworks.lib.vt.edu:10919/732872024-03-13T14:09:59Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Galois Field Quantum Mechanics
Modern Physics Letters B
Chang, Lay Nam
Lewis, Zachary
Minic, Djordje
Takeuchi, Tatsu
Physics
Physics, Applied
Physics, Condensed Matter
Physics, Mathematical
Physics
PHYSICS, APPLIED
PHYSICS, CONDENSED MATTER
PHYSICS, MATHEMATICAL
Quantum mechanics
Galois field
Bell's inequality
Clauser-Horne-Shimony-Holt bound
FINITE HILBERT-SPACE
INEQUALITIES
NONLOCALITY
SYSTEMS
We construct a discrete quantum mechanics using a vector space over the Galois field GF(q). We find that the correlations in our model do not violate the Clauser-Horne-Shimony-Holt (CHSH) version of Bell’s inequality, despite the fact that the predictions of this discrete quantum mechanics cannot be reproduced with any hidden variable theory.
Published version
2016-10-18T23:59:46Z
2016-10-18T23:59:46Z
2013-04-20
Article - Refereed
0217-9849
http://hdl.handle.net/10919/73287
https://doi.org/10.1142/S0217984913500644
27
10
English
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World Scientific
oai:vtechworks.lib.vt.edu:10919/751622024-03-13T14:09:32Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
Capillary adhesion at the nanometer scale.
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Cheng, S.
Robbins, M. O.
Physics
Adhesiveness
Capillary Action
Computer Simulation
Hydrodynamics
Models, Chemical
Molecular Dynamics Simulation
Nanoparticles
Rheology
Shear Strength
Stress, Mechanical
Molecular dynamics simulations are used to study the capillary adhesion from a nonvolatile liquid meniscus between a spherical tip and a flat substrate. The atomic structure of the tip, the tip radius, the contact angles of the liquid on the two surfaces, and the volume of the liquid bridge are varied. The capillary force between the tip and substrate is calculated as a function of their separation h. The force agrees with continuum predictions based on macroscopic theory for h down to ∼5 to 10 nm. At smaller h, the force tends to be less attractive than predicted and has strong oscillations. This oscillatory component of the capillary force is completely missed in the macroscopic theory, which only includes contributions from the surface tension around the circumference of the meniscus and the pressure difference over the cross section of the meniscus. The oscillation is found to be due to molecular layering of the liquid confined in the narrow gap between the tip and substrate. This effect is most pronounced for large tip radii and/or smooth surfaces. The other two components considered by the macroscopic theory are also identified. The surface tension term, as well as the meniscus shape, is accurately described by the macroscopic theory for h down to ∼1 nm, but the capillary pressure term is always more positive than the corresponding continuum result. This shift in the capillary pressure reduces the average adhesion by a factor as large as 2 from its continuum value and is found to be due to an anisotropy in the pressure tensor. The component in the plane of the substrate is consistent with the capillary pressure predicted by the macroscopic theory (i.e., the Young-Laplace equation), but the normal pressure that determines the capillary force is always more positive than the continuum counterpart.
Published version
2017-02-25T19:34:22Z
2017-02-25T19:34:22Z
2014-06
Article - Refereed
Research Support, U.S. Gov't, Non-P.H.S.
http://hdl.handle.net/10919/75162
https://doi.org/10.1103/PhysRevE.89.062402
89
6
1550-2376
eng
http://www.ncbi.nlm.nih.gov/pubmed/25019789
In Copyright
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062402 - ? page(s)
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United States
oai:vtechworks.lib.vt.edu:10919/780202024-03-13T14:09:24Zcom_10919_5com_10919_25799com_10919_24211com_10919_5553col_10919_70873col_10919_24287
First Determination of the Weak Charge of the Proton
Physical Review Letters
Androic, D.
Armstrong, D. S.
Asaturyan, A.
Averett, T.
Balewski, J.
Beaufait, J.
Beminiwattha, R. S.
Benesch, J.
Benmokhtar, F.
Birchall, J.
Carlini, R. D.
Cates, G. D.
Cornejo, J. C.
Covrig, S.
Dalton, M. M.
Davis, C. A.
Deconinck, W.
Diefenbach, J.
Dowd, J. F.
Dunne, J. A.
Dutta, D.
Duvall, W. S.
Elaasar, M.
Falk, W. R.
Finn, J. M.
Forest, T.
Gaskell, D.
Gericke, M. T. W.
Grames, J.
Gray, V. M.
Grimm, K.
Guo, F.
Hoskins, J. R.
Johnston, K.
Jones, D.
Jones, M.
Jones, R.
Kargiantoulakis, M.
King, P. M.
Korkmaz, E.
Kowalski, S.
Leacock, John
Leckey, J.
Lee, A. R.
Lee, J. H.
Lee, L.
MacEwan, S.
Mack, D.
Magee, J. A.
Mahurin, R.
Mammei, J.
Martin, J. W.
McHugh, M. J.
Meekins, D.
Mei, J.
Michaels, R.
Micherdzinska, A.
Mkrtchyan, A.
Mkrtchyan, H.
Morgan, N.
Myers, K. E.
Narayan, A.
Ndukum, L. Z.
Nelyubin, V.
Nuruzzaman
van Oers, W. T. H.
Opper, A. K.
Page, S. A.
Pan, J.
Paschke, K. D.
Phillips, S. K.
Pitt, M. L.
Poelker, M.
Rajotte, J. F.
Ramsay, W. D.
Roche, J.
Sawatzky, B.
Seva, T.
Shabestari, M. H.
Silwal, R.
Simicevic, N.
Smith, G. R.
Solvignon, P.
Spayde, D. T.
Subedi, A.
Subedi, R.
Suleiman, R.
Tadevosyan, V.
Tobias, W. A.
Tvaskis, V.
Waidyawansa, B.
Wang, P.
Wells, S. P.
Wood, S. A.
Yang, S.
Young, R. D.
Zhamkochyan, S.
Physics
Physics, Multidisciplinary
Physics
STRANGE FORM-FACTORS
SYMMETRY BREAKING
NEUTRAL-CURRENT
ANAPOLE MOMENT
NUCLEON
SCATTERING
CESIUM
MODEL
Published version
2017-06-12T19:07:47Z
2017-06-12T19:07:47Z
2013-10-02
Article - Refereed
0031-9007
http://hdl.handle.net/10919/78020
https://doi.org/10.1103/PhysRevLett.111.141803
111
14
English
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In Copyright
http://rightsstatements.org/vocab/InC/1.0/
? - ? (7) page(s)
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/479032020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Transport in molecular transistors: Symmetry effects and nonlinearities
Physical Review B
Rashkeev, S. N.
Di Ventra, M.
Pantelides, S. T.
Physics
Virginia Tech
field-effect transistors
conductance
resistance
junctions
device
physics, condensed matter
We report first-principles calculations of the current-voltage and current-gate-field characteristics of model molecular transistors to explore the factors that control current amplification and other properties. We show that both the position and amplitude of resonant peaks are modified by the use of substituents that affect the symmetry and dipole moments of the molecules, and allow a linear versus nonlinear Stark effect. In addition, strong nonlinearities arise at large source-drain currents.
DARPA/ONR Grant No. N00014-99-1-0351
National Science Foundation Grant No. DMR-98-03768
Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the U. S. Department of Energy under Contract No. DE-AC05 00OR22725
William A. and Nancy F. McMinn Endowment at Vanderbilt University
2014-05-07T15:37:09Z
2014-05-07T15:37:09Z
2002-07
2014-04-23
Article - Refereed
Rashkeev, S. N.; Di Ventra, M.|; Pantelides, S. T., "Transport in molecular transistors: Symmetry effects and nonlinearities," Phys. Rev. B 66, 033301 DOI: http://dx.doi.org/10.1103/PhysRevB.66.033301
1098-0121
http://hdl.handle.net/10919/47903
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.66.033301
https://doi.org/10.1103/PhysRevB.66.033301
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
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American Physical Society
oai:vtechworks.lib.vt.edu:10919/1163582023-09-28T07:13:10Zcom_10919_8195com_10919_25799com_10919_24211com_10919_5553col_10919_78882col_10919_24287
String Theory Bounds on the Cosmological Constant, the Higgs Mass, and the Quark and Lepton Masses
Symmetry
Berglund, Per
Hübsch, Tristan
Minic, Djordje
In this paper, we elaborate on the new understanding of the cosmological constant and the gauge hierarchy problems in the context of string theory in its metastring formulation, based on the concepts of modular spacetime and Born geometry. The interplay of phase space (and Born geometry), the Bekenstein bound, the mixing between ultraviolet (UV) and infrared (IR) physics and modular invariance in string theory is emphasized. This new viewpoint is fundamentally rooted in quantum contextuality and not in statistical observer bias (anthropic principle). We also discuss the extension of this point of view to the problem of masses of quarks and leptons and their respective mixing matrices.
Published version
2023-09-27T14:46:25Z
2023-09-27T14:46:25Z
2023-08-28
2023-09-27T12:36:07Z
Article - Refereed
Text
Berglund, P.; Hübsch, T.; Minic, D. String Theory Bounds on the Cosmological Constant, the Higgs Mass, and the Quark and Lepton Masses. Symmetry 2023, 15, 1660.
http://hdl.handle.net/10919/116358
https://doi.org/10.3390/sym15091660
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
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MDPI
oai:vtechworks.lib.vt.edu:10919/1123252022-11-02T07:13:20Zcom_10919_24211com_10919_5553col_10919_24287
On Black Holes as Macroscopic Quantum Objects
Frontiers in Physics
Dai, De-Chang
Minic, Djordje
Stojkovic, Dejan
black hole
kruskal-szekeres coordinates
quantum gravity
hawking radaition
gravitational collapse
The relative flow of the Schwarzschild vs. the proper time during the classical evolution of a collapsing shell in the Schwarzschild coordinates practically forces us to interpret black hole formation as a highly non-local quantum process in which a shell/anti-shell pair is created within the incipient horizon, thus canceling out the original collapsing shell exactly at the horizon. By studying quantum fields in the black hole background, we reveal similar non-local effects. Among other things, the outgoing member of the Hawking pair very quickly becomes entangled with the black hole geometry (and not its partner), which is in contrast with the usual assumption that the Hawking pair is maximally entangled according to the local geometry near the horizon. Also, an infalling wave affects the black hole geometry even before it crosses the horizon. Finally, we find that a particle takes a finite amount of time to tunnel in and out of the black hole horizon, and thus avoids infinite blue and redshift in processes happening exactly at the horizon. These findings strongly support the picture of a black hole as a macroscopic quantum object.
National Natural Science Foundation of China [11775140, 11947417]; US Department of Energy [DE-SC0020262]; Julian Schwinger Foundation; US National Science Foundation [PHY-1820738, PHY-2014021]
Published version
Funding D-CD is supported by the National Natural Science Foundation of China (Grant Nos 11775140 and 11947417). DM is supported in part by the US Department of Energy (under grant DE-SC0020262) and by the Julian Schwinger Foundation. DS is partially supported by the US National Science Foundation, under Grant Nos PHY-1820738 and PHY-2014021.
2022-11-01T15:08:51Z
2022-11-01T15:08:51Z
2022-07-14
Article - Refereed
Text
2296-424X
891977
http://hdl.handle.net/10919/112325
https://doi.org/10.3389/fphy.2022.891977
10
en
Creative Commons Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
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Frontiers
oai:vtechworks.lib.vt.edu:10919/476842020-10-29T05:01:50Zcom_10919_24211com_10919_5553col_10919_24287
Scatterings initiated by two coherent beams
Physical Review A
Li, M. C.
Physics
Virginia Tech
A theory, which exhibits the characteristic features of scatterings initiated by two coherent beams, is discussed in the present paper. We show that the imaginary part of the scattering amplitude is an experimentally measurable quantity. To know the imaginary part of the amplitude is quite important for certain aspects of quantum mechanics, for example, the dispersion relation for a fixed momentum transfer. This relation has not yet been experimentally verified.
2014-04-25T14:12:34Z
2014-04-25T14:12:34Z
1974-04
2014-04-22
Article - Refereed
Li, M. C., "Scatterings initiated by two coherent beams," Phys. Rev. A 9, 1635 (1974); DOI: http://dx.doi.org/10.1103/PhysRevA.9.1635
1050-2947
http://hdl.handle.net/10919/47684
http://journals.aps.org/pra/abstract/10.1103/PhysRevA.9.1635
https://doi.org/10.1103/PhysRevA.9.1635
en_US
In Copyright
http://rightsstatements.org/vocab/InC/1.0/
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American Physical Society
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