Browsing Scholarly Works, Department of Physics by Title
Now showing items 554-573 of 811
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Quantifying mRNA Synthesis and Decay Rates Using Small RNAs
(CELL PRESS, 2010-06)Regulation of mRNA decay is a critical component of global cellular adaptation to changing environments. The corresponding changes in mRNA lifetimes can be coordinated with changes in mRNA transcription rates to fine-tune ... -
Quantitative Determination of Temperature in the Approach to Magnetic Order of Ultracold Fermions in an Optical Lattice
(American Physical Society, 2010-05-07)We perform a quantitative simulation of the repulsive Fermi-Hubbard model using an ultracold gas trapped in an optical lattice. The entropy of the system is determined by comparing accurate measurements of the equilibrium ... -
Quantitative phase imaging with scanning holographic microscopy: an experimental assessment
(2006-11-28)This paper demonstrates experimentally how quantitative phase information can be obtained in scanning holographic microscopy. Scanning holography can operate in both coherent and incoherent modes, simultaneously if desired, ... -
Quantization of Fayet-Iliopoulos parameters in supergravity
(American Physical Society, 2011-04-08)In this short article we discuss quantization of the Fayet-Iliopoulos parameter in supergravity theories. We argue that, in supergravity, the Fayet-Iliopoulos parameter determines a lift of the group action to a line bundle, ... -
Quantum F-un: the q=1 limit of Galois field quantum mechanics, projective geometry and the field with one element
(Iop Publishing Ltd, 2014-10-10)We argue that the q = 1 limit of Galois Field Quantum Mechanics, which was constructed on a vector space over the Galois Field Fq = GF(q), corresponds to its ‘classical limit,’ where superposition of states is disallowed. ... -
Quantum gravity, torsion, parity violation, and all that
(American Physical Society, 2005-11)We discuss the issue of parity violation in quantum gravity. In particular, we study the coupling of fermionic degrees of freedom in the presence of torsion and the physical meaning of the Immirzi parameter from the viewpoint ... -
Quantum gravity, torsion, parity violation, and all that
(American Physical Soc, 2005-11-01) -
Quantum interference measurement of spin interactions in a bio-organic/semiconductor device structure
(Springer Nature, 2015-03-30)Quantum interference is used to measure the spin interactions between an InAs surface electron system and the iron center in the biomolecule hemin in nanometer proximity in a bio-organic/semiconductor device structure. The ... -
Quantum Nonequilibrium Steady States Induced by Repeated Interactions
(American Physical Society, 2009-05-22)We study the steady state of a finite XX chain coupled at its boundaries to quantum reservoirs made of free spins that interact one after the other with the chain. The two-point correlations are calculated exactly, and it ... -
Quantum Schubert polynomials for the G2 flag manifold
(2016)We study some combinatorial objects related to the flag manifold X of Lie type G2. Using the moment graph of X we calculate all the curve neighborhoods for Schubert classes. We use this calculation ... -
Quantum Systems Based Upon Galois Fields - From Sub-Quantum to Super-Quantum Correlations
(World Scientific Publ Co Pte Ltd, 2014-02-10)In this talk we describe our recent work on discrete quantum theory based on Galois fields. In particular, we discuss how discrete quantum theory sheds new light on the foundations of quantum theory and we review an explicit ... -
Quark-lepton unification and lepton flavor nonconservation from a TeV-scale seesaw neutrino mass texture
(American Physical Society, 2003-10-01)In a recent paper we pointed out that the mixing of the light neutrinos with heavy gauge singlet states could reconcile the Z-pole data from e(+)e(-) colliders and the nu(mu) ((nu) over bar (mu)) scattering data from the ... -
Quark-lepton unification and lepton flavor nonconservation from a TeV-scale seesaw neutrino mass texture
(American Physical Soc, 2003-10-01) -
Quasar Outflow Contribution to AGN Feedback: Observations of QSO SDSS J0838+2955
(IOP PUBLISHING LTD, 2009-11)We present a detailed analysis of the Astrophysical Research Consortium 3.5 m telescope spectrum of QSO SDSS J0838+2955. The object shows three broad absorption line (BAL) systems at 22,000, 13,000, and 4900 km s(-1) ... -
R Aquarii: First Detection of Circumstellar SiO Maser Proper Motions
(IOP PUBLISHING LTD, 1997-10)We have made the first detection of circumstellar SiO maser proper motions in the envelope of a late-type star. Using the Very Long Baseline Array (VLBA), we have obtained observations at four epochs of the 43 GHz, upsilon ... -
Radial velocity offsets due to mass outflows and extinction in active galactic nuclei
(IOP Publishing Ltd., 2010-01)We present a study of the radial velocity offsets between narrow emission lines and host galaxy lines (stellar absorption and Hi 21 cm emission) in Seyfert galaxies with observed redshifts less than 0.043. We find that 35% ... -
Radiative and Auger Decay Data for Modeling Nickel K Lines
(IOP PUBLISHING LTD, 2008-12)Radiative and Auger decay data have been calculated for modeling the K lines in ions of the nickel isonuclear sequence, from Ni(+) up to Ni(27+). Level energies, transition wavelengths, radiative transition probabilities, ... -
Radiative transition rates and collision strengths for Si II
(EDP SCIENCES, 2009-12)Aims. This work reports on radiative transition rates and electron impact excitation collision strengths for levels of the 3s(2)3p, 3s3p(2), 3s(2)4s, and 3s(2)3d configurations of Si II. Methods. The radiative data were ... -
Raman studies of sol-gel alumina - finite-size effects in nanocrystalline ALO(OH)
(American Physical Society, 1993-12-01)A systematic Raman-scattering investigation has been carried out on sol-gel alumina prepared by the hot-water hydrolysis and condensation of AI(OC4H9)3, the Yoldas process, as a function of process variables such as the ... -
Raman-scattering and optical studies of argon-etched GaAs surfaces
(American Physical Society, 1991-04)We have studied the structual damage in low-energy argon-ion-bombarded (ion-etched) GaAs using Raman scattering and ultraviolet reflectivity. When combined with post-bombardment sequential chemical etching, the Raman results ...
