Inflation of Universe by Nonlinear Electrodynamics

TL;DR

This paper explores how nonlinear electrodynamics can drive universe inflation, avoid electric field singularities, and produce cosmological parameters consistent with observational data.

Contribution

It introduces a nonlinear electrodynamics model that enables universe inflation with stable electromagnetic fields and matches cosmological observations.

Findings

Electric field singularity is absent in the model.

Universe inflation driven by stochastic magnetic fields.

Cosmological parameters align with PLANCK and WMAP data.

Abstract

Nonlinear electrodynamics with two dimensional parameters is studied. The range of electromagnetic fields when principles of causality, unitarity and the classical stability hold, are obtained. A singularity of the electric field at the center of charges is absent within our model and there are corrections to the Coulomb law as $r\rightarrow\infty$. The universe inflation takes place in the background of stochastic magnetic fields. The second stage of the universe evolution is the radiation era so that the graceful exit exists. We estimated the spectral index, the tensor-to-scalar ratio, and the running of the spectral index that are in a rough accord with the PLANCK and WMAP data.