• BD-FRW models in the framework of Israel-Stewart-Hiscock theory

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      https://www.ias.ac.in/article/fulltext/pram/045/06/0511-0517

    • Keywords

       

      Cosmology; Brans-Dicke theory; Israel-Stewart-Hiscock causal thermodynamics

    • Abstract

       

      BD-FRW universe filled with imperfect fluid having bulk viscosity is investigated under the framework of Israel-Stewart-Hiscock causal theory. The field equations have been solved by using the relationφ=KRα whereK andα are constants, between the Brans-Dicke scalar fieldϕ and the scale factorR. This relation, in fact, leads to a constant deceleration parameterq. It is shown that the constancy of the deceleration parameter permits only two possibilities i.e. eitherH=constant withm=1 orm=(1+bα)/(2(1+b) −α), irrespective of the value ofɛ.

    • Author Affiliations

       

      Kalyani Desikan1

      1. Department of Mathematics, Indian Institute of Technology, Madras - 600 036, India
    • Dates

       
  • Pramana – Journal of Physics | News

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