FIZIKA B 18 (2009) 1, 1934
BIANCHI TYPE I BULK VISCOUS FLUID TILTED COSMOLOGICAL MODEL FILLED WITH
DISORDERED RADIATION AND HEAT CONDUCTION
RAJ BALI^{a} and PRAMILA KUMAWAT^{b}
^{a}Department of Mathematics, University of Rajasthan, Jaipur302004 (Raj.), India
Email address: balir5@yahoo.co.in
^{b}Department of Mathematics, University of Rajasthan, Jaipur302004 (Raj.), India
Received 31 December 2007; Revised manuscript received 7 November 2008
Accepted 5 December 2008 Online 21 May 2009
Bianchi type I bulk viscous fluid tilted cosmological model filled with
disordered radiation and heat conduction is investigated. We assume that the
eigenvalue s_{1}^{1} of the shear
tensor s_{i}^{j} is proportional to the expansion
(q) which leads to A=(BC)^{n} between metric potentials A, B, C with
n=constant and zq = K (constant), where
z is the coefficient of bulk viscosity in the model.
To get the deterministic model in terms of cosmic time t, we discuss some
physically valid special models for different values of parameters. The physical
and geometrical aspects of the models are discussed.
PACS numbers: 98.80.Bp, 98.80.Jk
UDC 524.83
Keywords: Bianchi type I cosmological model, bulk viscous fluid
