• Friedmann–Robertson–Walker accelerating Universe with interactive dark energy

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      https://www.ias.ac.in/article/fulltext/pram/093/06/0089

    • Keywords

       

      Friedmann–Robertson–Walker Universe; SNe Ia data; observational parameters; accelerating Universe

    • Abstract

       

      In this work, we study a cosmological model based on the cosmological principle which exhibits a transition from deceleration to acceleration. We consider baryonic matter dark energy (DE), and ‘curvature’ energy. Both baryonic matter and DE have variable equations of state. It is assumed that DE interacts with and transforms energy to baryonic matter. A Friedmann–Robertson–Walker (FRW) Universe filled with two fluids has been discussed. The model is shown to satisfy current observational constraints. This Universe is at present in a phantom phase after passing through a quintessence phase in the past. Various cosmological parameters regarding the accelerating Universe have been presented. The evolution of DE, Hubble, deceleration parameters, etc. have been described with the aid of figures. Our theoretical results have been compared with the SNe Ia related Union 2.1 compilation 581 data and we have observed that our derived model is in good agreement with the current observational constraints. We have also explored the physical properties of the model.

    • Author Affiliations

       

      G K GOSWAMI1 ANIRUDH PRADHAN2 A BEESHAM3

      1. Department of Mathematics, Kalyan Post Graduate College, Bhilai 490 006, India
      2. Department of Mathematics, Institute of Applied Sciences and Humanities, GLA University, Mathura 281 406, India
      3. Department of Mathematical Sciences, University of Zululand, Kwa-Dlangezwa 3886, South Africa
    • Dates

       
  • Pramana – Journal of Physics | News

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