Nonlocal chiral quark models with Polyakov loop at finite temperature and chemical potential

TL;DR

This paper investigates the phase transitions of chiral symmetry restoration and deconfinement at finite temperature and chemical potential using a non-local chiral quark model that incorporates the Polyakov loop and lattice-inspired form factors.

Contribution

It introduces a non-local chiral quark model with wave function renormalization and Polyakov loop coupling, using form factors fitted to lattice QCD data.

Findings

Analysis of chiral and deconfinement transitions

Comparison of exponential and lattice-inspired form factors

Insights into gauge interaction effects on phase transitions

Abstract

We analyze the chiral restoration and deconfinement transitions in the framework of a non-local chiral quark model which includes terms leading to the quark wave function renormalization, and takes care of the effect of gauge interactions by coupling the quarks with the Polyakov loop. Non-local interactions are described by considering both a set of exponential form factors, and a set of form factors obtained from a fit to the mass and renormalization functions obtained in lattice calculations.