Chiral Symmetry Restoration and Quark Deconfinement beyond Mean Field in a Magnetized PNJL Model

TL;DR

This paper investigates how including meson feedback beyond mean field in a magnetized PNJL model affects chiral symmetry restoration and quark deconfinement, leading to coincident critical temperatures and inverse magnetic catalysis.

Contribution

It introduces a beyond mean field approach in a magnetized PNJL model, revealing the impact of meson feedback on phase transition behavior and magnetic catalysis.

Findings

Critical temperatures for chiral and deconfinement transitions coincide with meson feedback.

Inverse magnetic catalysis observed when meson contributions are included.

Meson feedback modifies quark coupling and Polyakov potential effects.

Abstract

We study chiral symmetry restoration and quark deconfinement beyond mean field approximation in a magnetized PNJL model. The feedback from mesons to quarks modifies the quark coupling constant and Polyakov potential. As a result, the separate critical temperatures for the two phase transitions at mean field level coincide and the magnetic catalysis becomes inverse magnetic catalysis, when the meson contribution is included.