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LRS Bianchi Type-II Cosmological Model with a Decaying Lambda Term |
| R. K. Tiwari**, D. Tiwari, Pratibha Shukla |
| Department of Mathematics, Govt. Model Science College Rewa, M. P. 486001, India |
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R. K. Tiwari, D. Tiwari, Pratibha Shukla 2012 Chin. Phys. Lett. 29 010403 |
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Abstract We consider a locally rotationally symmetric (LRS) Bianchi type-II spacetime with a perfect fluid and a variable cosmological constant Λ. To solve the Einstein field equations we consider the cosmological term Λ to be proportional to R−m with R being the scale factor and m a constant [Phys. Rev. D 58 (1998) 043506]. In this model we obtain Λ∼H2, Λ∼R"/R and Lambda ∼t−2, in agreement with the main dynamical laws for the decay of Λ. The physical significance of the cosmological model is also discussed.
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04.20.Jb
04.20-q
98.80.Cq
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Received: 14 July 2011
Published: 07 February 2012
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| PACS: |
04.20.Jb
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(Exact solutions)
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04.20-q
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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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