Chiral Magnetic Effect in the Dirac-Heisenberg-Wigner formalism

TL;DR

This paper investigates the Chiral Magnetic Effect using the Dirac-Heisenberg-Wigner formalism, extending previous models to include time-dependent fields and analyzing axial charge and current formation in heavy-ion collision scenarios.

Contribution

It introduces a time-dependent field extension of the Dirac-Heisenberg-Wigner formalism to study CME, providing insights into axial charge separation and current formation.

Findings

Qualitative analysis of CME in time-dependent fields

Insights into axial charge and current formation

Interpretation relevant to heavy-ion collision experiments

Abstract

The emergence of the Chiral Magnetic Effect (CME) and the related anomalous current is investigated using the real time Dirac-Heisenberg-Wigner formalism. This method is widely used for describing strong field physics and QED vacuum tunneling phenomena as well as pair-production in heavy-ion collisions. We extend earlier investigations of the CME in constant fluxtube configuration by considering time dependent fields. In our model we can follow the formation of axial charge separation, formation of axial current and then the emergence of the anomalous electric current. Qualitative results are shown for special field configurations that help interpret the predictions of CME related effects in heavy-ion collisions in the RHIC Beam Energy Scan program.