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      https://www.ias.ac.in/article/fulltext/pram/090/04/0055

    • Keywords

       

      Accelerated expansion of the Universe; quintessence; dynamical system; Friedmann–Lemaitre– Robertson–Walker Universe; interacting quintessence model; phase-space analysis; best-fit Universe; late-time scaling attractors.

    • Abstract

       

      In this paper, we consider a particular form of coupling, namely $B = \sigma(\dot{\rho}m − \dot{\rho}\phi)$ in spatially flat $(k = 0)$ Friedmann–Lemaitre–Robertson–Walker (FLRW) space–time. We perform phase-space analysis for this interacting quintessence (dark energy) and dark matter model for different numerical values of parameters. We also show the phase-space analysis for the ‘best-fit Universe’ or concordance model. In our analysis, we observe the existence of late-time scaling attractors.

    • Author Affiliations

       

      BINAYAK S CHOUDHURY1 HIMADRI SHEKHAR MONDAL2 DEVOSMITA CHATTERJEE1

      1. Department of Basic and Applied Sciences, Indian Institute of Engineering, Science and Technology, Shibpur, Howrah 711 103, India
      2. Department of Mathematics, Midnapore College (Autonomous), Medinipur 721 101, India
    • Dates

       
  • Pramana – Journal of Physics | News

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