Landau gauge gluon and ghost propagators from lattice QCD with Nf=2 twisted mass fermions at finite temperature

TL;DR

This study examines how Landau gauge gluon and ghost propagators in lattice QCD vary with temperature using twisted mass fermions, providing data and parametrizations relevant for continuum methods.

Contribution

It offers new lattice QCD data on gluon and ghost propagators at finite temperature with twisted mass fermions, including parametrizations for continuum studies.

Findings

Gluon propagator components change smoothly across the crossover region.

Ghost propagator shows minimal temperature dependence.

Provides parametrizations for momenta between 0.4 and 3.0 GeV.

Abstract

We investigate the temperature dependence of the Landau gauge gluon and ghost propagators in lattice QCD with two flavors of maximally twisted mass fermions. For these propagators we provide and analyze data which corresponds to pion mass values between 300 and 500 MeV. For the gluon propagator we find that both the longitudinal and transversal component change smoothly in the crossover region, while the ghost propagator exhibits only a very weak temperature dependence. For momenta between 0.4 and 3.0 GeV we give a parametrization for our lattice data. It may serve as input to studies which employ continuum functional methods.