Bianchi Type-III String Cosmological Models with Time Dependent Bulk Viscosity
BALI Raj1, PRADHAN Anirudh2
1Department of Mathematics, University of Rajasthan, Jaipur-302 004, India
2Department of Mathematics, Hindu Post-Graduate College, Zamania-232 331, Ghazipur, India
Bianchi Type-III String Cosmological Models with Time Dependent Bulk Viscosity
BALI Raj1;PRADHAN Anirudh2
1Department of Mathematics, University of Rajasthan, Jaipur-302 004, India
2Department of Mathematics, Hindu Post-Graduate College, Zamania-232 331, Ghazipur, India
摘要Bianchi type-III string cosmological models with bulk viscous fluid for massive string are investigated. To obtain the determinate model of the universe, we assume that the coefficient of bulk viscosity ξ is inversely proportional to the expansion θ in the model and expansion θ in the model is proportional to the shear σ. This leads to B =l Cn, where l and n are constants. Behaviour of the model in the presence and absence of bulk viscosity is discussed. The physical implications of the models are also discussed in detail.
Abstract：Bianchi type-III string cosmological models with bulk viscous fluid for massive string are investigated. To obtain the determinate model of the universe, we assume that the coefficient of bulk viscosity ξ is inversely proportional to the expansion θ in the model and expansion θ in the model is proportional to the shear σ. This leads to B =l Cn, where l and n are constants. Behaviour of the model in the presence and absence of bulk viscosity is discussed. The physical implications of the models are also discussed in detail.
(Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.))
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2007, Vol. 24 
