Symmetry breaking effect on the inhomogeneous chiral transition in the magnetic field

TL;DR

This paper investigates how a strong magnetic field influences the inhomogeneous chiral phase in QCD, revealing that magnetic fields can extend this phase into low chemical potential regions, which can be tested via lattice QCD simulations.

Contribution

It demonstrates the impact of magnetic fields on the inhomogeneous chiral phase and discusses phase transition properties using a generalized Ginzburg-Landau approach.

Findings

Magnetic field extends the inhomogeneous chiral phase to low chemical potential regions.

The phase's properties are analyzed through a generalized Ginzburg-Landau expansion.

The phase's existence can be probed by lattice QCD simulations.

Abstract

We study the change of the effect of the current quark mass on the inhomogeneous chiral phase in the QCD phase diagram, and discuss the property of the phase transition by the generalized Ginzburg-Landau expansion. The strong external magnetic field spreads this phase over the low chemical potential region even if the current quark mass is finite. This implies that the existence of this phase can be explored by the lattice QCD simulation.