International Journal of Theoretical Physics

, Volume 47, Issue 12, pp 3288–3297

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

Article

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 σij. Physical and kinematical properties of the models are discussed considering bulk viscosity to be a power function of matter density.

Keywords

Bianchi I Bulk viscous Cosmological constant Time dependent 

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© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Department of MathematicsUniversity of RajasthanJaipurIndia
  2. 2.Department of Mathematical SciencesA.P.S. UniversityRewaIndia

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