Inflation and Acceleration of the Universe by Nonlinear Magnetic Monopole Fields

TL;DR

This paper introduces a nonlinear magnetic monopole field model that removes the initial singularity in Friedmann-Robertson-Walker cosmology, providing a nonsingular extension of the universe's early evolution.

Contribution

It proposes a new nonlinear electromagnetic model that avoids singularities in cosmological solutions, advancing understanding of early universe behavior.

Findings

Nonsingular FRW solutions are obtained using nonlinear magnetic monopole fields.

The model extends classical cosmology by removing the big bang singularity.

Analytical solutions demonstrate the potential of nonlinear electromagnetism in cosmology.

Abstract

Despite impressive phenomenological successes, cosmological models are incomplete without an understanding of what happened at the big bang singularity. Maxwell electrodynamics, considered as a source of the classical Einstein field equations, leads to the singular isotropic Friedmann solutions. In the context of Friedmann-Robertson-Walker (FRW) spacetime, we show that singular behavior does not occur for a class of nonlinear generalizations of the electromagnetic theory for strong fields. A new mathematical model is proposed for which the analytical nonsingular extension of FRW solutions is obtained by using the nonlinear magnetic monopole fields.