Bianchi Type V Viscous Fluid Cosmological Models in Presence of Decaying Vacuum Energy

Details Bianchi Type V Viscous Fluid Cosmological Models in Presence of Decaying Vacuum Energy Bianchi Type V Viscous Fluid Cosmological Models in Presence of Decaying Vacuum Energy

2012-02-13

arxiv.org/abs/1202.3050v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 3 figures

Scientific paper

Bianchi type V viscous fluid cosmological model for barotropic fluid distribution with varying cosmological term $\Lambda$ is investigated. We have examined a cosmological scenario proposing a variation law for Hubble parameter $H$ in the background of homogeneous, anisotropic Bianchi type V space-time. The model isotropizes asymptotically and the presence of shear viscosity accelerates the isotropization. The model describes a unified expansion history of the universe indicating initial decelerating expansion and late time accelerating phase. Cosmological consequences of the model are also discussed.

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