UScholar Works
 
Filters: Journal Title:"Physical Review D" Collection:"ir_uspace"
1 - 25 of 8
Number of results to display per page
CreatorTitleDescriptionSubjectDate
1DeTar, CarletonCritical behavior in Nt=4 staggered fermion thermodynamicsQuantum chromodynamics with two zero mass flavors is expected to exhibit a phase transition with O(4) critical behavior. Fixing the universality class is important for phenomenology and for facilitating the extrapolation of simulation data to physical quark mass values. Other groups have reported r...Staggered fermions; Phase transitions; Quark-gluon plasma; Chiral symmetry2000-01
2DeTar, CarletonCritical behavior in Nt=4 staggered fermion thermodynamicsQuantum chromodynamics with two zero mass flavors is expected to exhibit a phase transition with O(4) critical behavior. Fixing the universality class is important for phenomenology and for facilitating the extrapolation of simulation data to physical quark mass values. Other groups have reported r...Staggered fermions; Phase transitions2000-01
3DeTar, CarletonPotts flux tube model at nonzero chemical potentialWe model the deconfinement phase transition in quantum chromodynamics at nonzero baryon number density and large quark mass by extending the flux tube model ~three-state, three-dimensional Potts model! to nonzero chemical potential. In a direct numerical simulation we confirm mean-field-theory pre...Phase transitions; Quark-gluon plasma; Chemical potential; Potts model2000-03
4Gondolo, PaoloPrompt atmospheric neutrinos and muons: dependence on the gluon distribution functionWe compute the next-to-leading order QCD predictions for the vertical flux of atmospheric muons and neutrinos from decays of charmed particles, for different PDF's (MRS-R1, MRS-R2, CTEQ-4M and MRST) and different extrapolations of these at a small partonic momentum fraction x. We find that the predi...Neutrino telescopes; Charm; Atmospheric flux; Prompt flux2000-02
5Gondolo, PaoloPrompt atmospheric neutrinos and muons: NLO vs LO QCD predictionsWe compare the leading and next-to-leading order QCD predictions for the flux of atmospheric muons and neutrinos from decays of charmed particles. We find that the full NLO lepton fluxes can be approximated to within ~10% by the Born-level fluxes multiplied by an overall factor of 2.2-2.4, which d...Atmospheric flux; Prompt flux; Charm2000-01
6DeTar, CarletonScaling and eigenmode tests of the improved fat clover actionWe test a recently proposed improved lattice-fermion action, the fat link clover action, examining indicators of pathological small-quark-mass lattice artifacts (‘‘exceptional configurations'') on quenched lattices of spacing 0.12 fm and studying scaling properties of the light hadron spectrum ...Clover actions; Wilson actions2000-12
7DeTar, CarletonScaling tests of the improved Kogut-Susskind quark actionImproved lattice actions for Kogut-Susskind quarks have been shown to improve rotational symmetry and flavor symmetry. In this work we find improved scaling behavior of the r and nucleon masses expressed in units of a length scale obtained from the static quark potential, and better behavior of the ...Instantons; Static potential2000-04
8DeTar, CarletonStatic quark potential in three flavor QCDWe study the effects of dynamical quarks on the static quark potential at distances shorter than those where string breaking is expected. Quenched calculations and calculations with three flavors of dynamical quarks are done on sets of lattices with the lattice spacings matched within about one pe...Dynamical quarks; Antiquarks; Static potential2000-07
1 - 25 of 8