Lattice QCD gluon propagators near transition temperature
V. G. Bornyakov, V. K. Mitrjushkin
TL;DR
This study numerically investigates Landau gauge gluon propagators in SU(3) gluodynamics and full QCD near the transition temperature, analyzing effects like Gribov copies and finite volume dependence.
Contribution
It provides a comparative analysis of gluon propagators near the transition point in two phases, highlighting the impact of Gribov copy effects and finite volume dependence.
Findings
Strong Gribov copy effects in gluodynamics
Weak Gribov noise in full QCD
Finite volume dependence analyzed for propagators
Abstract
Landau gauge gluon propagators are studied numerically in the SU(3) gluodynamics as well as in the full QCD with the number of flavors using efficient gauge fixing technique. We compare these propagators at temperatures very close to the transition point in two phases : confinement and deconfinement. The electric mass has been determined from the momentum space longitudinal gluon propagator. Gribov copy effects are found to be rather strong in the gluodynamics, while in the full QCD case they are weak ("Gribov noise"). Also we analyse finite volume dependence of the transverse and longitudinal propagators.
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