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Cosmological models with variable gravitational and cosmological “constants”

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Abstract

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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Author notes

  1. Marcelo Samuel Berman

    Present address: Departamento de Ciencias Exatas, Faculdade de Filosofia, Ciencias e Letras da FURJ, 89200, Joinville, SC, Brazil

Authors and Affiliations

  1. Department of Astronomy, University of Florida, 211 SSRB, 32611, Gainesville, Florida

    Marcelo Samuel Berman

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  1. Marcelo Samuel Berman
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Berman, M.S. Cosmological models with variable gravitational and cosmological “constants”. Gen Relat Gravit 23, 465–469 (1991). https://doi.org/10.1007/BF00756609

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  • DOI: https://doi.org/10.1007/BF00756609

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