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      https://www.ias.ac.in/article/fulltext/pram/040/01/0031-0034

    • Keywords

       

      Cosmology; inflation; scalar tensor theory; 98·80; 04·20

    • Abstract

       

      Extended inflation solution in Brans-Dicke theory given by Mathiazhagan and Johri (MJ) is shown as the unique solution only if the scale factor is assumed to be a power function of the scalar field. Only the consistent solution amongst the set of solutions given by Patra, Roy and Ray is found identical to the MJ solution. Both exponential inflation and power function inflation are studied in general scalar tensor theory where the parameter to is a function of the scalar, field. It is noted that exponential inflation is forbidden in Brans-Dicke theory wherew is a constant.

    • Author Affiliations

       

      A Banerjee1 S B Dutta Choudhury1 N Banerjee1 A Sil1

      1. Relativity and Cosmology Research Centre, Department of Physics, Jadavpur University, Calcutta - 700032, India
    • Dates

       
  • Pramana – Journal of Physics | News

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