Chiral magnetic properties of QCD phase-diagram

TL;DR

This study explores how strong magnetic fields influence the QCD phase diagram, revealing that magnetic effects like catalysis can lower the transition temperature between hadron and parton phases, with implications for understanding QCD matter.

Contribution

It introduces a detailed analysis of chiral magnetic properties in the QCD phase diagram using the SU(3) Polyakov linear sigma model, incorporating Landau quantization and magnetic catalysis effects.

Findings

Parton phase exhibits higher magnetization and magnetic susceptibility than hadron phase.

Magnetic catalysis enhances chiral condensates, affecting the phase transition.

Chiral magnetic effects lower the critical temperature for phase transition.

Abstract

The QCD phase diagram is studied, at finite magnetic field. Our calculations are based on the QCD effective model, the SU($3$) Polyakov linear sigma model (PLSM), in which the chiral symmetry is integrated in the hadron phase and in the parton phase, the up-, down- and strange-quark degrees of freedom are incorporated besides the inclusion of Polyakov loop potentials in the pure gauge limit, which are motivated by various underlying QCD symmetries. The Landau quantization and the magnetic catalysis are implemented. The response of the QCD matter to an external magnetic field such as magnetization, magnetic susceptibility and permeability has been estimated. We conclude that the parton phase has higher values of magnetization, magnetic susceptibility, and permeability relative to the hadron phase. Depending on the contributions to the Landau levels, we conclude that the chiral magnetic field enhances the chiral quark condensates and hence the chiral QCD phase diagram, i.e. the hadron-parton phase transition likely takes place, at lower critical temperatures and chemical potentials.