Inflation and Acceleration of the Universe from Nonminimal Coupling Gravity with Nonlinear Electrodynamics

TL;DR

This paper proposes a nonminimal gravity model coupled with nonlinear electrodynamics to explain both early universe inflation and late-time cosmic acceleration, aligning well with observational data.

Contribution

It introduces a novel nonminimal coupling framework that unifies inflation and acceleration phases, with mechanisms for graceful exit from inflation.

Findings

Model successfully reproduces inflationary and accelerated expansion phases.

Comparison shows compatibility with recent cosmological observations.

Provides a viable alternative to standard dark energy models.

Abstract

In this paper, we consider a nonminimal coupling model between gravity and nonlinear electrodynamics with cosmological constant. This cosmological model is designed to account for both the inflationary epoch of the early universe and the current phase of accelerated cosmic expansion. The nonlinear electrodynamic fields provide a mechanism for a graceful exit from the inflationary period, preventing the universe from entering an eternal inflation state. The addition of nonminimal coupling plays a crucial role in determining whether the transition from inflation to the subsequent cosmic phases results in accelerated or decelerated expansion. We compare the theoretical predictions of our model with recent observational data and other leading cosmological models, showing that our approach provides a viable and competitive explanation for key aspects of the universe's evolution. Our results suggest that this model offers a consistent and compelling framework to explain both early-time inflation and the late-time accelerated expansion of the universe, in line with current observations.