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Spherically symmetric viscous cosmology in Brans–Dicke theory

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Abstract

In the present paper, we investigated spherically symmetric space–time for bulk viscosity in the context of Brans–Dicke theory (BBT) of gravitation. It is observed that the Universe is accelerating for small values of expansion scalar and decelerating for large values of expansion scalar. The coefficient of bulk viscosity is negative, the wormhole is compact in Case I whereas in Case II, it is proportional to energy density and positive and the wormhole is non-compact. The required conditions for the wormhole are satisfied.

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Acknowledgements

The authors are grateful to the anonymous referee for their valuable comments and suggestions to improve the manuscript.

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Authors and Affiliations

  1. Department of Mathematics, A.E.S. Arts, Commerce and Science College, Hingoli, 431 513, India

    S P Hatkar & G D Karhale

  2. Department of Mathematics, Sant Gadge Baba Amravati University, Amravati, 444  602, India

    S D Katore

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  1. S P Hatkar
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  2. G D Karhale
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  3. S D Katore
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Correspondence to S P Hatkar.

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Hatkar, S.P., Karhale, G.D. & Katore, S.D. Spherically symmetric viscous cosmology in Brans–Dicke theory. Pramana - J Phys 97, 35 (2023). https://doi.org/10.1007/s12043-022-02495-9

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  • DOI: https://doi.org/10.1007/s12043-022-02495-9

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