Thermodynamics in NJL-like models

TL;DR

This paper compares the thermodynamic properties of NJL and Polyakov-loop-extended NJL models, focusing on their phase diagrams in the temperature-chemical potential plane to understand their phase transition behaviors.

Contribution

It provides a comparative analysis of thermodynamic behaviors and phase diagrams in NJL-like models, highlighting differences introduced by the Polyakov loop extension.

Findings

Differences in phase transition points between models.

Impact of Polyakov loop on thermodynamic properties.

Insights into the QCD phase diagram structure.

Abstract

Thermodynamic behavior of conventional Nambu-Jona-Lasinio and Polyakov-loop-extended Nambu-Jona-Lasinio models is compared. A particular attention is paid to the phase diagram in the ($T -\mu$) plane.