Cosmological models with variable gravitational and cosmological ``constants''

Details Cosmological models with variable gravitational and cosmological ``constants'' Cosmological models with variable gravitational and cosmological ``constants''

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gregr..23..465b&link_type=abstract

General Relativity and Gravitation, Volume 23, Issue 4, pp.465-469

Mathematics

Logic

57

Scientific paper

We consider the Einstein field equations with perfect fluid source and variable Λ andG for the Robertson-Walker metric. When conservation of energy momentum is postulated and the deceleration parameter is assumed constant, we find perfect gas equation of state models in the Euclidean and non-Euclidean cases. The resulting models offer an alternative to the inflationary scenario; they also explain the huge value of the cosmological term in the early universe.

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