Fermion self-energy in magnetized chirally asymmetric QED matter

TL;DR

This paper calculates the fermion self-energy in a magnetized, chirally asymmetric QED plasma, revealing a momentum shift that modifies the chiral magnetic effect and may influence early Universe magnetic field evolution.

Contribution

It introduces a dynamically generated momentum shift parameter that alters the chiral magnetic effect in a magnetized chiral plasma.

Findings

Momentum shift modifies the chiral magnetic effect current.

The momentum shift can impact magnetic field evolution in the early Universe.

The study provides a new mechanism for chiral plasma dynamics.

Abstract

The fermion self-energy is calculated for a cold QED plasma with chiral chemical potential in a magnetic field. It is found that a momentum shift parameter dynamically generated in such a plasma leads to a modification of the chiral magnetic effect current. It is argued that the momentum shift parameter can be relevant for the evolution of magnetic field in the chirally asymmetric primordial plasma in the early Universe.