FIZIKA B 19 (2010) 2, 91-102

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BIANCHI TYPE-I STIFF-FLUID TILTED COSMOLOGICAL MODEL WITH BULK VISCOSITY IN GENERAL RELATIVITY

RAJ BALIa, PRAMILA KUMAWAT and SHALINI SHARMA
Department of Mathematics, University of Rajasthan, Jaipur-302055, India
aE-mail address: balir5@yahoo.co.in

Received 18 February 2010;     Revised manuscript received 21 April 2010
Accepted 19 May 2010     Online 3 June 2010

Bianchi type-I stiff-fluid tilted cosmological model with bulk viscosity is investigated. To get the deterministic model of the universe, we have assumed that the universe is filled with a stiff fluid, a condition A=(BC)n between the metric potentials A, B, C and zq = constant, where z is the coefficient of bulk viscosity, q the expansion and n is a constant. The physical and geometrical aspects of the model in the presence and absence of bulk viscosity are discussed.

PACS numbers: 98.80.-k, 04.20.-q
UDC 524.83, 52-423

Keywords: Bianchi type-I cosmological model, stiff fluid, tilted, bulk viscosity

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