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Cosmological models in generalized scalar-tensor theory with cosmological term and bulk viscosity

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Abstract

Exponential and power law solutions for homogeneous cosmological modelshave been discussed in a generalized scalar-tensor theory where both thecosmological term Λ and coupling parameter ω are taken tobe functions of the scalar field φ, along with the bulk viscousstress of the cosmic fluid. Assuming simple relationships of the scalarfield with the cosmological term and the coupling parameter, all thesolutions are studied in Dicke's revised units. By use of a conformaltransformation, the solutions are also expressed in atomic units.

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Authors and Affiliations

  1. Department of Mathematical Sciences, University of Zululand, Private Bag X1001, Kwa-Dlangezwa, 3886, South Africa

    Tarkeshwar Singh, G.P. Singh & A. Beesham

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  1. Tarkeshwar Singh
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  2. G.P. Singh
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  3. A. Beesham
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Singh, T., Singh, G. & Beesham, A. Cosmological models in generalized scalar-tensor theory with cosmological term and bulk viscosity. Astrophysics and Space Science 275, 275–283 (2001). https://doi.org/10.1023/A:1002760920427

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