Some cosmological models with constant deceleration parameter
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Berman (1983) presented a law of variation of Hubble’s parameter that yields constant deceleration parameter models of the Universe. In this paper, Robertson-Walker models have been studied in Einstein’s theory with cosmological term and in cosmological theory based on Lyra’s geometry. Some simple models have been obtained. The necessary relations in each model have been derived, considering a perfect fluid.
PACS98.80 - Cosmology
PACS04.50 - Unifed field theories and other theories of gravitation
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