• Massless particles and cosmology

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Cosmology; density perturbations; radiation; massless particles; neutrino

    • Abstract


      Post recombination density perturbations have been studied in a two-component matter-radiation universe. The study has been carried out for variable matter and radiation densities. The possibility of the existence of different kinds of neutrinos in addition to the electronic, muonic and taonic has been considered and conclusions have been drawn as to the upper limit of the radiation density for different values of Ωm.

    • Author Affiliations


      Varun Sahni1

      1. Department of Physics, Moscow State University, Moscow, USSR
    • Dates

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2023-2024 Indian Academy of Sciences, Bengaluru.