Acceleration of the Universe in f(R) Gravity Models

TL;DR

This paper develops a general formalism to analyze the late-time cosmic acceleration in f(R) gravity models with cold dark matter, demonstrating its application through two specific examples aligned with observations.

Contribution

It introduces a comprehensive formalism for studying late-time universe dynamics in f(R) gravity models, validated with observationally consistent parameter choices.

Findings

Formalism effectively models late-time acceleration.

Examples show compatibility with observational data.

Framework aids future f(R) gravity research.

Abstract

A general formalism for the investigation of the late time dynamics of the universe for any analytic f(R) gravity model, along with a cold dark matter, has been discussed in the present work. The formalism is then elucidated with two examples. The values of the parameters of the models are chosen in such a way that they are consistent with the basic observational requirement.