Role of Extended Gravity Theory in Matter Bounce Dynamics

TL;DR

This paper explores how extended $f(R,T)$ gravity influences matter bounce cosmologies, aiming to avoid the big bang singularity and analyze the model's stability and observational consistency.

Contribution

It introduces a novel analysis of bouncing cosmologies within $f(R,T)$ gravity, including parameter effects, cosmographic testing, and stability assessment.

Findings

$f(R,T)$ gravity significantly impacts cosmic dynamics.

The model can produce stable bouncing solutions.

Cosmographic parameters align with observational data.

Abstract

In this work, we have studied some bouncing cosmologies in the frame work of $f(R,T)$ gravity. The bouncing scenario has been formulated to avoid the big bang singularity. The physical and geometrical parameters are investigated. The effect of the extended gravity theory on the dynamical parameters of the model is investigated. It is found that, the $f(R,T)$ gravity parameter affects the cosmic dynamics substantially. We have also, tested the model through the calculation of the cosmographic coefficients and the $Om(z)$ parameter. A scalar field reconstruction of the bouncing scenario is also carried out. The stability of the model are tested under linear, homogeneous and isotropic perturbations.