Bulk Viscous Fluid Hypersrface-Homogeneous Cosmological Models in Barbar's Second Self-creation Theory

Abstract

Hypersurface-homogeneous cosmological models containing a bulk viscous fluid within the framework of Barber’s [1982, GRG, 14,117] Second Self-creation theory of gravitation have been presented. We have shown that the field equations are solvable for any arbitrary cosmic scale function and then obtained exact solutions for two values of a specific parameter. While doing so, we have used the general equation of state p=γρ, where γ (0 ≤ γ ≥ 1) is a constant. Some physical and geometrical behaviors of these models are also discussed.