Chiral Magnetic Effect from Q-balls

TL;DR

This paper proposes a mechanism for the chiral magnetic effect in quark-gluon plasma using linear sigma models with Q-balls, revealing how electric currents are generated along magnetic fields and predicting possible Q-ball formation in heavy-ion collisions.

Contribution

It introduces a novel Q-ball based mechanism for the chiral magnetic effect within linear sigma models, including effects of quark masses and potential formation in heavy-ion collisions.

Findings

Electric current arises along magnetic fields due to Q-balls.

Additional alternating current is caused by quark mass terms.

Q-balls may be created in heavy-ion collision experiments.

Abstract

We apply a generic framework of linear sigma models for revealing a mechanism of the mysterious phenomenon, the chiral magnetic effect, in quark-gluon plasma. An electric current arises along a background magnetic field, which is given rise to by Q-balls (non-topological solitons) of the linear sigma model with axial anomaly. We find additional alternating current due to quark mass terms. The hadronic Q-balls, baby boson stars, may be created in heavy-ion collisions.