Viscous Generalized Chaplygin Gas Interacting with f(R,T) gravity

TL;DR

This paper explores how viscous generalized Chaplygin gas interacts with f(R,T) gravity in a Friedmann-Robertson-Walker universe, deriving modified equations and analyzing effects on cosmic acceleration through viscosity and interaction models.

Contribution

It introduces a novel analysis of viscous Chaplygin gas interacting with f(R,T) gravity, including modified Friedmann equations and viscosity effects on universe expansion.

Findings

Viscosity influences dark energy density evolution.

Interaction models affect cosmic acceleration.

Graphical analysis shows viscosity enhances acceleration.

Abstract

In this paper, we study in Friedmann-Robertson-Walker universe the interaction between the viscous generalized Chaplygin gas with $f(R,T)$ gravity, which is an arbitrary function of the Ricci scalar $R$ and the trace $T$ of the energy-momentum tensor. Assuming that the contents of universe is dominated by a generalized Chaplygin gas and dark energy, we obtained the modified Friedmann equations and also the time dependent energy density and pressure of dark energy due to the shear and bulk viscosities for three interacting models depending on an input parameter $Q$. Within the simple form of scale factor (power-law), we discuss the graphical representation of dark energy density parameter and investigate the shear and bulk viscosities effects on the accelerating expansion of the universe for each interacting model.