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Bianchi Type III Bulk Viscous Barotropic Fluid Cosmological Models 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 2009 Chin. Phys. Lett. 26 029802 |
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Abstract Bianchi type-III bulk viscous barotropic fluid cosmological model with variables G and Λ is investigated. To obtain the realistic model, we assume the conditions between the metric potentials A, B, C as ・A/A=・B/B=m1/tn and ・C/C=m2/tn, P=p-3ηH,η=η0 ρs, p =γρ, 0≤γ≤1, where p is isotropic pressure, η the coefficient of bulk viscosity, η0 and S the constants, H the Hubble constant, m1= 2m2 where m1>0, m2>0. The solutions obtained lead to inflationary phase and the results obtained match with the observations. The case n=1 for S=1 is also discussed, relating the results with the observations.
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98.80.Hw
04.50.+h
98.80.Cq
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Received: 21 July 2008
Published: 20 January 2009
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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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