The influence of chiral chemical potential, parallel electric and magnetic fields on the critical temperature of QCD

TL;DR

This paper investigates how parallel electric and magnetic fields, along with a chiral chemical potential, affect the critical temperature of chiral symmetry restoration in QCD using a Nambu-Jona-Lasinio model.

Contribution

It provides a theoretical analysis of the combined effects of external fields and chiral chemical potential on the QCD phase transition, extending previous studies.

Findings

Fields inhibit chiral symmetry restoration.

Chiral chemical potential enhances chiral symmetry breaking.

Critical temperature depends on field strengths and $$.

Abstract

We study the influence of external electric, $E$, and magnetic, $B$, fields parallel to each other, and of a chiral chemical potential, $\mu_5$, on the chiral phase transition of Quantum Chromodynamics. Our theoretical framework is a Nambu-Jona-Lasinio model with a contact interaction. Within this model we compute the critical temperature of chiral symmetry restoration, $T_c$, as a function of the chiral chemical potential and field strengths. We find that the fields inhibit and $\mu_5$ enhances chiral symmetry breaking, in agreement with previous studies.