On the quark-gluon vertex at non-vanishing temperature

TL;DR

This paper investigates the behavior of the quark-gluon vertex at non-zero temperatures using a semi-perturbative approach inspired by advanced effective action techniques, focusing on tensor structure dynamics across the QCD crossover.

Contribution

It introduces a semi-perturbative calculation method for the quark-gluon vertex at finite temperature based on the three-loop expanded 3PI effective action, highlighting tensor structure variations.

Findings

Analysis of tensor structure strengths below and above crossover

Insights into chirally symmetric and broken phases

Semi-perturbative approach applicable to finite temperature QCD

Abstract

We perform a semi-perturbative calculation of the quark-gluon vertex inspired from the three-loop expanded 3PI effective action and investigate the relative strengths of the chirally symmetric/broken tensor structures below and above the crossover.