Phase diagram of strongly interacting matter under strong magnetic fields

TL;DR

This paper investigates how strong magnetic fields influence the phase diagram of strongly interacting matter using the PNJL and EPNJL models, with implications for cosmology, neutron stars, and heavy ion collisions.

Contribution

It provides a detailed analysis of the QCD phase diagram under strong magnetic fields using advanced effective models, extending previous studies.

Findings

Magnetic fields significantly alter the phase transition boundaries.

The models predict magnetic catalysis effects on chiral symmetry restoration.

Results have implications for understanding matter in extreme astrophysical environments.

Abstract

The understanding of the behaviour of strongly interacting matter at finite temperature and density is of fundamental interest and has applications in cosmology, in the astrophysics of neutron stars and in the physics of relativistic heavy ion collisions. Given the possible existence of strong magnetic fields in the mentioned situations, their effect on the QCD phase diagram has recently become a topic of increasing interest. Here, we report on the study of this issue in the framework of the two flavor Nambu-Jona-Lasinio model with Polyakov loop (PNJL) and an extension of it, the so-called entangled PNJL model (EPNJL).