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 provides insights relevant to heavy-ion collision experiments.

Contribution

It introduces a time-dependent field model within the Dirac-Heisenberg-Wigner formalism to study the CME, advancing understanding of axial charge dynamics.

Findings

Demonstrates formation of axial charge separation over time

Shows emergence of anomalous electric current in dynamic fields

Provides qualitative predictions for heavy-ion collision scenarios

Abstract

In this paper 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 flux tube configuration by considering time dependent fields. In this 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 to interpret the predictions of CME related effects in heavy-ion collisions at the RHIC Beam Energy Scan program.