• Gravitational energy in Brans-Dicke cosmological models

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/052/02/0121-0126

    • 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

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.