Rational nonlinear electrodynamics causes the inflation of the universe

TL;DR

This paper proposes that electromagnetic fields governed by rational nonlinear electrodynamics can drive the universe's inflation, avoiding singularities and leading to a finite inflation period with realistic e-folding, transitioning smoothly to the radiation era.

Contribution

It introduces a model where rational nonlinear electrodynamics causes inflation without singularities, providing a new mechanism for early universe expansion.

Findings

Inflation lasts about 2 seconds with N≈63

The model avoids singularities in electric and curvature scalars

Universe transitions from de Sitter to radiation era

Abstract

The source of the universe inflation is electromagnetic fields obeying rational nonlinear electrodynamics proposed earlier. Within this model the singularities of the electric field at the center of charges, the Ricci scalar, the Ricci tensor squared and the Kretschmann scalar are absent. We consider the universe which is filled by stochastic magnetic fields. It is demonstrated that the inflation lasts approximately $2$ s with the reasonable e-folding number $N\approx 63$. The Inflation starts from de Sitter spacetime and after the universe inflation end it decelerates approaching the radiation era.