Now showing items 1-10 of 31
Charge assignments in multiple-U(1) gauge theories
(American Physical Society, 1999-12-01)
We discuss the choice of gauge field basis in multiple-U(1) gauge theories. We find that there is a preferred basis, specified by the charge orthogonality condition, in which the U(1) gauge fields do not mix under one-loop ...
Energies and residues of the nucleon resonances N(1535) and N(1650)
(American Physical Society, 1998-12)
We extract pole positions for the N(1535) and N(1650) resonances using two different models. The positions are determined from fits to different subsets of the existing pi N --> pi N, pi N --> eta N, and gamma p --> eta p ...
Photogeneration action spectroscopy of neutral and charged excitations in films of a ladder-type poly(para-phenylene)
(American Physical Society, 1999-04-19)
The photogeneration quantum efficiency action spectra of long-lived neutral and charged excitations in films of a ladder-type poly(para-phenylene) were measured. We found that both tripler and polaron action spectra show, ...
Comment on "Evidence for narrow baryon resonances in inelastic pp scattering"
(American Physical Society, 1998-08-10)
Nonuniversal exponents in interface growth - Newman and Swift reply
(American Physical Society, 1998-12-14)
Monte Carlo simulation calculation of the critical coupling constant for two-dimensional continuum phi(4) theory
(American Physical Society, 1998-10)
We perform a Monte Carlo simulation calculation of the critical coupling constant for the continuum two-dimensional (lambda/4) phi(4) theory. The critical coupling constant we obtain is [lambda/mu(2)](crit) = 10.26(-.04)(+.08). ...
Measurement of the spectral momentum distribution of valence-electrons in amorphous-carbon by (e, 2e) spectroscopy
(American Physical Society, 1994-01-15)
The spectral momentum density of the valence band of are evaporated amorphous carbon has been measured by (e, 2e) spectroscopy with significantly improved energy resolution relative to earlier studies. The valence band has ...
Infrared reflectivity and lattice fundamentals in anatase TiO2
(American Physical Society, 1997-03-15)
Polarization-dependent far-infrared reflectivity measurements were carried out on single crystals of anatase TiO2. The results were analyzed to yield the dielectric dispersion properties of anatase in the lattice fundamentals ...
Variational study of the spin-gap phase of the one-dimensional t-J model
(American Physical Society, 1996-10-01)
We propose a correlated spin-singlet-pair wave function to describe the spin-gap phase of the one-dimensional t-J model at low density and large J/t. In addition to having singlet pairs, this wave function has a Jastrow ...
Delta isobar masses, large N-c relations, and the quark model
(American Physical Society, 1999-01-01)
Motivated by recent remarks on the Delta(+) mass and comparisons between the quark model and relations based on large-iri, with perturbative flavor breaking, two sets of Delta masses consistent with these constraints are ...