Maxwell-Chern-Simons Hydrodynamics for the Chiral Magnetic Effect

TL;DR

This paper develops a relativistic hydrodynamics model incorporating axial anomaly effects through Chern-Simons terms to better understand the chiral magnetic effect observed in heavy-ion collisions.

Contribution

It introduces a novel hydrodynamic framework that includes Chern-Simons modifications to account for axial anomalies and the chiral magnetic effect.

Findings

Model captures parity-odd charge separation phenomena.

Provides a theoretical basis for interpreting heavy-ion collision experiments.

Enhances understanding of topological effects in quark-gluon plasma.

Abstract

The rate of vacuum changing topological solutions of the gluon field, sphalerons, is estimated to be large at the typical temperatures of heavy-ion collisions, particularly at the Relativistic Heavy Ion Collider. Such windings in the gluon field are expected to produce parity-odd bubbles, which cause separation of positively and negatively charged quarks along the axis of the external magnetic field. This chiral magnetic effect can be mimicked by Chern-Simons modified electromagnetism. Here we present a model of relativistic hydrodynamics including the effects of axial anomalies via the Chern-Simons term.