Finite Temperature Meson Masses with Improved Quenched Wilson Fermions
نویسنده
چکیده
We present recent results for meson screening masses with quenched Wilson fermions above and below the confinementdeconfinement phase transition. The action used in the simulation is the Sheikholeslami Wohlert action. The quark masses are chosen to be in a range going from light quarks up to the mass of the charm quark. These results are compared with zero temperature Wilson and high temperature staggered data.
منابع مشابه
Meson Screening Masses at high Temperature in quenched QCD with improved Wilson Quarks
We report on a lattice investigation of improved quenched Wilson fermions above and below the confinement-deconfinement phase transition. Results on meson screening masses as well as spatial wave functions are presented. Moreover, the meson dispersion relation is studied. Below the critical temperature we do not observe any significant temperature effect while above Tc the data are consistent w...
متن کاملScaling of Non-Perturbatively O(a) Improved Wilson Fermions: Hadron Spectrum, Quark Masses and Decay Constants
We compute the hadron mass spectrum, the quark masses and the meson decay constants in quenched lattice QCD with non-perturbatively O(a) improved Wilson fermions. The calculations are done for two values of the coupling constant, β = 6.0 and 6.2, and the results are compared with the predictions of ordinary Wilson fermions. We find that the improved action reduces lattice artifacts as expected.
متن کاملNon-perturbative renormalization of the quark condensate in Ginsparg-Wilson regularizations
We present a method to compute non-perturbatively the renormalization constant of the scalar density for Ginsparg-Wilson fermions. It relies on chiral symmetry and is based on a matching of renormalization group invariant masses at fixed pseudoscalar meson mass, making use of results previously obtained by the ALPHA Collaboration for O(a)-improved Wilson fermions. Our approach is quite general ...
متن کاملThermodynamics with Dynamical Clover Fermions
We investigate the finite temperature behavior of nonperturbatively improved clover fermions on lattices with temporal extent Nt = 4 and 6. Unfortunately in the gauge coupling range, where the clover coefficient has been determined nonperturbatively, the finite temperature crossover/transition occurs at heavy pseudoscalar masses and large pseudoscalar to vector meson mass ratios. However, on an...
متن کاملQuenched Hadrons using Wilson and O(a)-Improved Fermion Actions
We present the first study of the light hadron spectrum and decay constants for quenched QCD using an O(a)-improved nearest-neighbour Wilson fermion action at β = 6.2. We compare the results with those obtained using the standard Wilson fermion action, on the same set of 18 gauge field configurations of a 243×48 lattice. For pseudoscalar meson masses in the range 330-800 MeV, we find no signifi...
متن کامل