Generation of Bianchi type V cosmological models with varying $Λ$-term

Details Generation of Bianchi type V cosmological models with varying $Λ$-term Generation of Bianchi type V cosmological models with varying $Λ$-term

2004-08-20

arxiv.org/abs/gr-qc/0408070v1

Czech.J.Phys. 55 (2005) 503-518

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, 3 figures, submitted to CJP

Scientific paper

10.1007/s10582-005-0057-3

Bianchi type V perfect fluid cosmological models are investigated with cosmological term $\Lambda$ varying with time. Using a generation technique (Camci {\it et al.}, 2001), it is shown that the Einstein's field equations are solvable for any arbitrary cosmic scale function. Solutions for particular forms of cosmic scale functions are also obtained. The cosmological constant is found to be decreasing function of time, which is supported by results from recent type Ia supernovae observations. Some physical aspects of the models are also discussed.

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