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Bulk Viscous Bianchi Type I Cosmological Models with Time-Dependent Cosmological Term Λ

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Abstract

Bianchi type I cosmological models with time-varying cosmological constant Λ and bulk viscous fluid are investigated. Cosmic matter is chosen to obey a barotropic equation of state. Exact solutions of Einstein’s field equations are obtained assuming the volume expansion θ proportional to the eigen values of shear tensor σ ij . Physical and kinematical properties of the models are discussed considering bulk viscosity to be a power function of matter density.

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Authors and Affiliations

  1. Department of Mathematics, University of Rajasthan, Jaipur, 302004, India

    Raj Bali

  2. Department of Mathematical Sciences, A.P.S. University, Rewa, 486003, India

    J. P. Singh

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  1. Raj Bali
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  2. J. P. Singh
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Correspondence to Raj Bali.

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Bali, R., Singh, J.P. Bulk Viscous Bianchi Type I Cosmological Models with Time-Dependent Cosmological Term Λ. Int J Theor Phys 47, 3288–3297 (2008). https://doi.org/10.1007/s10773-008-9764-4

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  • DOI: https://doi.org/10.1007/s10773-008-9764-4

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