Inflation from R^2 gravity: a new approach using nonlinear electrodynamics

TL;DR

This paper proposes a novel inflationary model based on R^2 gravity combined with nonlinear electrodynamics, resulting in a non-singular bouncing cosmology and power-law inflation driven by the Ricci scalar.

Contribution

It introduces a new approach integrating nonlinear electrodynamics into R^2 gravity to achieve a non-singular bouncing universe with power-law inflation.

Findings

Non-singular bouncing cosmology achieved.

Power-law inflation driven by Ricci scalar.

Integration of nonlinear electrodynamics into R^2 gravity.

Abstract

We discuss another approach regarding the inflation from the R^2 theory of gravity originally proposed by Starobinski. A non-singular early cosmology is proposed, where, adding a nonlinear electrodynamics Lagrangian to the high-order action, a bouncing is present and a power-law inflation is obtained. In the model the Ricci scalar works like an inflaton field.