Influence of an Electric Field on the Propagation of a Photon in a Magnetic field

TL;DR

This paper investigates how a weak electric field influences photon propagation in a magnetic field below the Schwinger critical value, focusing on effective photon mass and pair creation thresholds.

Contribution

It introduces an analysis of photon effective mass in combined electromagnetic fields, highlighting the absence of root divergence with a weak electric field.

Findings

Weak electric field removes root divergence near pair creation thresholds

Photon effective mass depends on polarization and energy region

Electric field influences photon propagation characteristics

Abstract

In this work, a constant and uniform magnetic field is less than the Schwinger critical value. In turn, an additional constant and uniform electric field is taken much smaller than the magnetic field value. The propagation of a photon in this electromagnetic field is investigating. In particular, in the presence of a weak electric field, the root divergence is absent in the photon effective mass near the thresholds of pair creation. The effective mass of a real photon with a preset polarization is considered in the quantum energy region as well as in the quasiclassical one.