• Gravitational energy in Brans-Dicke cosmological models

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    • Keywords


      Brans-Dicke theory; gravitational energy; scalar field; expanding universe

    • Abstract


      The behaviour of gravitational energy and scalar field during the evolution of the universe within the framework of Brans-Dicke theory has been discussed. With help of the Landau-Lifshitz pseudo-tensor for the flat Friedmann-Robertson-Walker model, it is found that (i) the total energy of the universe is always zero, (ii) the Brans-Dicke scalar field for all Ω >-0 contributes energy to the negative energy of gravitational field and this gets transferred to the vacuum energy which accelerates the expansion of the universe.

    • Author Affiliations


      V B Johri1 G P Singh2

      1. Department of Mathematics and Astronomy, Lucknow University, Lucknow - 226007, India
      2. Department of Mathematics, Visvesvaraya Regional College of Engineering, Nagpur, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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