An Exponential F(R) Dark Energy Model

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.

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• Dynamical behavior in mimetic F(R) gravity
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• Accelerating Cosmology and Phase Structure of F(R) Gravity with Lagrange Multiplier Constraint: Mimetic Approach
• A class of static spherically symmetric solutions in $f(Q)$-gravity
• Viable Mimetic Completion of Unified Inflation-Dark Energy Evolution in Modified Gravity
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• Dark Energy Oscillations in Mimetic $F(R)$ Gravity
• Dark Energy and Equation of State Oscillations with Collisional Matter Fluid in Exponential Modified Gravity
• Late-time cosmological evolution of a general class of f(R, T) gravity with minimal curvature-matter coupling
• Aspects of Late-time Evolution in Mimetic $F(R)$ Gravity
• Information content in $F(R)$ brane models with non-constant curvature
• Late Time Cosmological Evolution in f(R) theories with Ordinary and Collisional Matter
• Late-time Cosmology of scalar field assisted $f(\mathcal{G})$ gravity
• Cosmological constraints on $R^2$-corrected Appleby-Battye model
• Late time dynamics of $f(R,T,R_{\mu \nu }{T}^{\mu \nu })$ gravity
• Viability of general relativity and modified gravity cosmologies using high-redshift cosmic probes
• Construction of f(R) Gravity Models
• Early universe cosmological solutions in exponential gravity
• A Note on Gravitational Memory in F(R)-theories and their Equivalent Scalar-Tensor Theories
• Some Classes of Gravitational Shock Waves from Higher Order Theories of Gravity