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Bianchi Type V Viscous Fluid Cosmological Models with Varying Cosmological Term

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Abstract

Bianchi type V viscous fluid cosmological models with varying cosmological term Λ are investigated. We have examined a cosmological scenario proposing expansion anisotropy σ/θ to be suitable function of average scale factor S in the background of homogeneous, anisotropic Bianchi type V space-time. The models isotropize asymptotically and the presence of shear viscosity accelerates the isotropization. Our models describe a unified expansion history of the universe indicating initial decelerating expansion and late time accelerating phase consistent with observations. Physical and kinematical parameters of the models are discussed.

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Acknowledgments

We are grateful to the anonymous referee for suggestions that have led to the improvements in the manuscript.

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Authors and Affiliations

  1. Department of Mathematical Sciences, Awadhesh Pratap Singh University, Rewa, 486003, India

    J. P. Singh, P. S. Baghel & A. Singh

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  1. J. P. Singh
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  2. P. S. Baghel
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  3. A. Singh
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Correspondence to P. S. Baghel.

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Singh, J.P., Baghel, P.S. & Singh, A. Bianchi Type V Viscous Fluid Cosmological Models with Varying Cosmological Term. Int J Theor Phys 54, 2740–2757 (2015). https://doi.org/10.1007/s10773-015-2511-8

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  • DOI: https://doi.org/10.1007/s10773-015-2511-8

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