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Bianchi Type-V Bulk Viscous Barotropic Fluid Cosmological Model with Variable G and Λ |
| Raj Bali, Seema Tinker |
| Department of Mathematics, University of Rajasthan, Jaipur-302004, India |
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| Cite this article: |
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Raj Bali, Seema Tinker 2008 Chin. Phys. Lett. 25 3090-3093 |
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Abstract We investigate the Bianchi type-V bulk viscous barotropic fluid cosmological model with variable gravitational constant G and the cosmological constant Λ, assuming the condition on metric potential as A'/A=B'/B=C'/C=m/tn, where A, B, and C are functions of time t, while m and n are constants. To obtain the deterministic model, we also assume the relations P = p - 3ηH, p =γρ, η=η0ρs, where p is the isotropic pressure, η the bulk viscosity, 0≤γ≤1, H the Hubble constant, η0 and s are constants. Various physical aspects of the model are discussed. The case of n = 1 is also discussed to compare the results with the actual universe.
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98.80.Hw
04.50.+h
98.80.Cq
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Received: 28 December 2007
Published: 25 July 2008
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98.80.Hw
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04.50.+h
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98.80.Cq
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(Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.))
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