The quark propagator and quark-gluon vertex from lattice QCD at finite temperature

TL;DR

This paper aims to determine the quark-gluon vertex at finite temperature using lattice QCD, providing new insights into QCD behavior near the deconfinement transition.

Contribution

First lattice QCD determination of the quark-gluon vertex at finite temperature around the deconfinement/chiral transition.

Findings

Initial results on quark-gluon vertex at finite temperature

Propagator data obtained as a by-product

Technical methodology for lattice QCD at finite temperature

Abstract

The quark-gluon vertex is an important object of QCD. Studies have shown that this quantity is relevant for the dynamical chiral symmetry breaking pattern in the vacuum. The goal of our project is to obtain the quark-gluon vertex at finite temperature around the deconfinement/chiral transition using the tools provided by lattice QCD. It will be the first time that the quark-gluon vertex at finite temperature is determined using lattice QCD. The propagators, which are a by-product of this project, are also of interest in themselves. The configurations used were generated by the FASTSUM collaboration. In this contribution, we describe our motivations and goals, some technical details of the determination and report on the status of the calculation.