Inflation-Produced Magnetic Fields in Nonlinear Electrodynamics

TL;DR

This paper investigates how nonlinear electrodynamics during inflation could generate primordial magnetic fields, which might be significant for astrophysics despite their dependence on inflation parameters.

Contribution

It explores the generation of magnetic fields in nonlinear electrodynamics during inflation, highlighting the potential astrophysical relevance of these fields.

Findings

Magnetic field strength depends on inflation characteristics.

Generated fields could be astrophysically significant.

Nonlinear electrodynamics can produce primeval magnetic fields.

Abstract

We study the generation of primeval magnetic fields during inflation era in nonlinear theories of electrodynamics. Although the intensity of the produced fields strongly depends on characteristics of inflation and on the form of electromagnetic Lagrangian, our results do not exclude the possibility that these fields could be astrophysically interesting.