# Finite Temperature Landau Gauge Lattice Quark Propagator

## TL;DR

This study examines the quark propagator at finite temperature using lattice QCD, revealing how it varies across the deconfinement transition and linking gluon dynamics to chiral symmetry breaking.

## Contribution

It provides new insights into the temperature dependence of the quark propagator and its relation to deconfinement and chiral symmetry restoration in lattice QCD.

## Key findings

- Significant differences in propagator form factors below and above $T_c$.
- Strong correlation between gluon dynamics and chiral symmetry breaking.
- Support for quarks as free quasi-particles above $T_c$ at low momenta.

## Abstract

The quark propagator at finite temperature is investigated using quenched gauge configurations. The propagator form factors are investigated for temperatures above and below the gluon deconfinement temperature $T_c$ and for the various Matsubara frequencies. Significant differences between the functional behaviour below and above $T_c$ are observed both for the quark wave function and the running quark mass. The results for the running quark mass indicate a strong link between gluon dynamics, the mechanism for chiral symmetry breaking and the deconfinement mechanism. For temperatures above $T_c$ and for low momenta, our results support also a description of quarks as free quasi-particles.