Exploring the bouncing cosmological models in symmetric teleparallel gravity

TL;DR

This paper investigates bouncing cosmological models within symmetric teleparallel gravity using f(Q) theory, analyzing their behavior, physical properties, and how model parameters influence the universe's evolution.

Contribution

It introduces two new bouncing cosmological models in f(Q) gravity with different functional forms of f(Q), exploring their dynamics and physical implications.

Findings

Model parameters significantly influence behavior.

Models exhibit universe-like evolution with specific EoS parameters.

Built-in models challenge traditional energy conditions.

Abstract

In this study, cosmological models with perfect fluid and a gravitational framework f(Q) will be examined. In this modified theory of gravity, the gravitational force has the form f(Q), where Q stands for the non-metricity scalar. I create two bouncing cosmological models, one in which the Lagrangian f(Q) is assumed to have a linear dependence on Q and the other in which it has a polynomial functional form. It has been discovered that the parameters of the individual models largely determine how they will behave. The resulting models' equation of state (EoS) parameter captures the universe's ironic behavior. It should be highlighted that the built-in cosmological models go against the energy requirements. The models' kinematical and physical characteristics are discussed.