Inflation and acceleration of the universe from nonminimal coupling gravity with nonlinear electrodynamics

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 shaping the early evolution of the universe. 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.