Bouncing Universe with exotic radiation

TL;DR

This paper explores bouncing universe models by proposing two state equations, including exotic radiation, to achieve a cosmological bounce, thereby addressing singularity issues and expanding the model's viability.

Contribution

It introduces a novel exotic radiation state equation that, along with existing quintom matter scenarios, enables a successful cosmological bounce.

Findings

Exotic radiation can facilitate a universe bounce.

Both proposed scenarios satisfy bounce conditions.

Supports the viability of bouncing universe models.

Abstract

Scenario bouncing can give the cosmology singularity problem a possible way out. Finding a solution for the universe's bouncing model requires proper estimation of the state equation. We present two such state equations that give us the solution for a bounce. One such case is the exotic radiation, where we assumed that exotic radiation dominated the universe during the bounce occurrence. We also considered another case where quintom matter scenario existed previously, and the newly proposed exotic radiation scenario coexisted. In these two cases, we have shown that all the necessary conditions for the bounce are fulfilled. Such new ways certainly increase support and flexibility for the bouncing universe model.