Phase structure, critical points and susceptibilities in Nambu-Jona-Lasinio type models

TL;DR

This paper explores the phase transitions and critical phenomena in Nambu-Jona-Lasinio models at finite temperature and chemical potential, focusing on susceptibilities, specific heat, and critical exponents near the critical end point.

Contribution

It provides a detailed analysis of the critical behavior and phase structure in NJL models, including calculations of critical exponents and susceptibilities.

Findings

Identification of critical points in NJL models

Behavior of baryon number susceptibility near critical end point

Calculation of critical exponents for phase transitions

Abstract

We investigate the chiral phase transition at finite temperature and chemical potential within SU(2) and SU(3) Nambu-Jona-Lasinio type models. The behavior of the baryon number susceptibility and the specific heat, in the vicinity of the critical end point, is studied. The class of the critical points is analyzed by calculating critical exponents.