Bulk Viscous Cosmological Models in Barber's Second Self Creation Theory

TL;DR

This paper explores cosmological models within Barber's second self-creation theory incorporating bulk viscous fluids, analyzing their physical and geometrical properties under specific assumptions about the metric and viscosity.

Contribution

It introduces new bulk viscous cosmological models in Barber's theory with a constant deceleration parameter, considering viscosity as a power function of density.

Findings

Models exhibit accelerated expansion under certain conditions.

Bulk viscosity influences the anisotropy and evolution of the universe.

Physical parameters remain finite and well-behaved in the models.

Abstract

Barber's second self creation theory with bulk viscous fluid source for an LRS Bianchi type-I metric is considered by using deceleration parameter to be constant where the metric potentials are taken as function of $x$ and $t$. The coefficient of bulk viscosity is assumed to be a power function of the mass density. Some physical and geometrical features of the models are discussed