The interrelation between the generation of large-scale electric fields and that of large-scale magnetic fields during inflation

TL;DR

This paper explores how breaking conformal invariance during inflation influences the simultaneous generation of large-scale electric and magnetic fields, revealing a suppression relationship between them.

Contribution

It provides a theoretical analysis of the inverse relationship between electric and magnetic field generation during inflation due to conformal invariance breaking.

Findings

Large-scale magnetic fields can be generated with high amplitude during inflation.

Generation of large-scale electric fields is suppressed when magnetic fields are strong.

The study offers a physical interpretation and discusses cosmological implications.

Abstract

The interrelation between the generation of large-scale electric fields and that of large-scale magnetic fields due to the breaking of the conformal invariance of the electromagnetic field in inflationary cosmology is studied. It is shown that if large-scale magnetic fields with a sufficiently large amplitude are generated during inflation, the generation of large-scale electric fields is suppressed, and vice versa. Furthermore, a physical interpretation of the result and its cosmological significance are considered.