An Exponential F(R) Dark Energy Model

TL;DR

This paper introduces an exponential F(R) modified gravity model that is viable, free of finite time singularities, and consistent with Newton's law and scalaron mass constraints, contributing to dark energy research.

Contribution

The paper proposes a new exponential F(R) gravity model and demonstrates its viability, addressing singularities, Newtonian limits, and scalaron mass issues.

Findings

Model passes tests for finite time singularities

Model is consistent with Newton's law corrections

Scalaron mass remains within acceptable bounds

Abstract

We present an exponential $F(R)$ modified gravity model in the Jordan and the Einstein frame. We use a general approach in order to investigate and demonstrate the viability of the model. Apart from the general features that this models has, which actually render it viable at a first step, we address the issues of finite time singularities, Newton's law corrections and the scalaron mass. As we will evince, the model passes these latter two tests successfully and also has no finite time singularities, a feature inherent to other well studied exponential models.