Original scientific paper
A cosmological model with varying G and Λ term in general relativity
R. K. Tiwari
; Department of Mathematics, Government Model Science College, Rewa (M.P.), India
S. S. Tiwari
; Department of Mathematics, Government Model Science College, Rewa (M.P.), India
P. Pandey
; Department of Physics, Government Model Science College, Rewa (M.P.), India
Abstract
Einstein's field equations with variable gravitational constant and cosmological constants are considered in the presence of perfect fluid for Bianchi type-I universe by assuming the cosmological term proportional to R−m (R is scale factor and m is a constant). The model approaches quasi-isotropic state. The cosmological term decreases with increasing time. We obtain that the present universe is accelerating with a large fraction of cosmological density in the from of cosmological term.
Keywords
cosmology; Bianchi type-I universe; variable cosmological term
Hrčak ID:
304608
URI
Publication date:
1.11.2010.
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