Journal
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
Volume 47, Issue 12, Pages 3288-3297Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10773-008-9764-4
Keywords
Bianchi I; Bulk viscous; Cosmological constant; Time dependent
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Funding
- MPCST, Bhopal
- Mini Research Project
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Bianchi type I cosmological models with time-varying cosmological constant Sigma 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 theta proportional to the eigen values of shear tensor sigma (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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