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      https://www.ias.ac.in/article/fulltext/pram/094/0147

    • Keywords

       

      Bianchi I Universe; Brans–Dicke theory; linearly varying deceleration parameter; dark energy.

    • Abstract

       

      The present article deals with the study of interacting and non-interacting dark energy (DE) and dark matter (DM) in the spatially homogeneous and anisotropic Bianchi I space–time within the framework of Brans–Dicke (BD) scalar–tensor theory of gravitation. As the set of field equations is not closed, exact solutions are obtained using power-law relation and assuming a linearly varying deceleration parameter. The physical acceptability and stability of the obtained model are scrutinised using energy conditions and squared speed of sound. The statefinder diagnostic method is adopted to discuss and measure the deviation of the considered model from the $\Lambda$ cold dark matter ($\Lambda$CDM) model.

    • Author Affiliations

       

      G P SINGH1 ASHWINI R LALKE1 NIKHIL HULKE2

      1. Department of Mathematics, Visvesvaraya National Institute of Technology, Nagpur 440 010, India
      2. Department of Applied Mathematics, Shri Ramdeobaba College of Engineering and Management, Nagpur 440 013, India
    • Dates

       
  • Pramana – Journal of Physics | News

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