Original scientific paper

Bulk viscous cosmological models in general relativity

A. Pradhan ; Department of Mathematics, Hindu Post-graduate College, Zamania-232 331, Ghazipur, India
V. Rai ; Department of Mathematics, Post-graduate College, Ghazipur-233 001, India
R. S. Singh ; Department of Mathematics, Post-graduate College, Ghazipur-233 001, India

Abstract

A new class of exact solutions of Einstein's field equations with bulk viscous fluid for an locally rotationally symmetric Bianchi type-I spacetime is obtained by using a variable deceleration parameter. We have described three cases, depending on the different forms of deceleration parameter, in which six models of the universe are obtained. The value of Hubble's constant H0 is found to be less than unity for these models which are of the physical interest. Some physical and geometric properties of the models are also discussed.

Keywords

cosmology; LRS Bianchi type-I universe; bulk viscous models; deceleration parameter

Hrčak ID:

304464

URI

https://hrcak.srce.hr/304464

Publication date:

2.5.2007.

Article data in other languages: croatian

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