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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


Puni tekst: engleski pdf 99 Kb

str. 193-200

preuzimanja: 87

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Sažetak

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.

Ključne riječi

cosmology; Bianchi type-I universe; variable cosmological term

Hrčak ID:

304608

URI

https://hrcak.srce.hr/304608

Datum izdavanja:

1.11.2010.

Podaci na drugim jezicima: hrvatski

Posjeta: 351 *