Some non linear interactions in polytropic gas cosmology: Phase space analysis

TL;DR

This paper performs a phase space analysis of cosmological models involving non-linear interacting polytropic gas, exploring their implications for dark energy and dark matter interactions within the universe.

Contribution

It introduces a novel phase space analysis for non-linear interacting polytropic gas models in cosmology, addressing dark energy and dark matter interactions.

Findings

Identification of critical points in the phase space.

Insights into stability of cosmological solutions.

Potential explanations for dark energy behavior.

Abstract

There are various cosmological models with polytropic equation of state associated to dark energy. Polytropic EoS has important applications in astrophysics, therefore a study of it on cosmological framework continues to be interesting. From the other hand, there are various forms of interactions phenomenologically involved into the darkness of the universe able to solve important cosmological problems. This is a motivation for us to perform a phase space analysis of various cosmological scenarios where non linear interacting polytropic gas models are involved. Dark matter is taken to be a pressureless fluid.