• Stochastic evolution of the Universe: A possible dynamical process leading to fractal structures

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/090/01/0002

    • Keywords

       

      Cosmology; stochastic equations; Fokker–Planck equation

    • Abstract

       

      In this paper, we propose a stochastic evolution of the early Universe which can lead to a fractal correlation in galactic distribution in the Universe. The stochastic equation of state, due to fluctuating creation rates of various components in a many-component fluid, leads to a fluctuating expansion rate for the Universe in the early epochs. It provides persistent fluctuations in the number count vs. apparent magnitude relation, as expected from the observation of a fractal distribution of the galaxies. We also present a stochastic evolution of density perturbations in the early Universe.

    • Author Affiliations

       

      C SIVAKUMAR1

      1. Department of Physics, Maharaja’s College, Ernakulam 682 011, India
    • Dates

       
  • Pramana – Journal of Physics | News

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