Vol 11, No 7 (2011) / Tiwari

Robertson-Walker cosmological models with perfect fluid in general relativity

Rishi Kumar Tiwari


Einstein’s field equations with variable gravitational and cosmological constants are considered in the presence of perfect fluid for a Robertson-Walker universe by assuming the cosmological term to be proportional to R−m (R is a scale factor and m is a constant). A variety of solutions is presented. The physical significance of the cosmological models has also been discussed.


cosmological parameters — cosmology: variable cosmological term

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