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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/052/01/0001-0017

    • Keywords

       

      Particle production; back reaction; singularity avoidance

    • Abstract

       

      We consider particle production in Robertson-Walker spacetime as particle-antiparticle rotation. We thereby obtain a scale factor that guarantees particle production. We then study quantum field effects in spatially flat homogeneous and isotropic spacetime with energy density of created particles and one loop quantum correction as back reaction. In the numerical solution initial values are determined from particle production simulated scale factor and obtain the evolution of the universe both at early and late times having a bounce.

    • Author Affiliations

       

      A Shaw1 D Biswas1 B Modak1 S Biswas1

      1. Department of Physics, University of Kalyani, P.O. Kalyani, Nadia 741 235, West Bengal, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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