• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/056/04/0477-0486

    • Keywords

       

      Cosmology; stochastic equations; Fokker-Planck equation

    • Abstract

       

      We develop a stochastic formulation of cosmology in the early universe, after considering the scatter in the redshift-apparent magnitude diagram in the early epochs as an observational evidence for the non-deterministic evolution of early universe. We consider the stochastic evolution of density parameter in the early universe after the inflationary phase qualitatively, under the assumption of fluctuating w factor in the equation of state, in the Fokker-Planck formalism. Since the scale factor for the universe depends on the energy density, from the coupled Friedmann equations we calculated the two variable probability distribution function assuming a flat space geometry.

    • Author Affiliations

       

      C Sivakumar1 Moncy V John1 2 K Babu Joseph1

      1. Department of Physics, Cochin University of Science and Technology, Kochi - 682 022, India
      2. Department of Physics, St. Thomas College, Kozhencherri - 689 641, 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.