• Developments in inflationary cosmology

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/072/01/0169-0182

    • Keywords

       

      Inflation; cosmology; supersymmetry; dissipation.

    • Abstract

       

      This talk presents some recent work that has been done in inflationary cosmology. First a brief review is given of the inflation scenario and its basic models. After that, one of the main problems in developing inflationary models has been the requirement of a very flat inflation potential. In solving this problem, supersymmetry has played a major role, and the reasons will be discussed and a specific example of the SUSY hybrid model will be examined. Some problems introduced by SUSY such as the 𝜂 and gravitino problems will then be discussed. Then in a different direction, the quintessential inflation model will be examined as a proposal where a single scalar field plays the role of both the inflaton at early time and the dark energy field later. The final topic covered is developments in understanding dissipation and particle production processes during the inflationary phase.

    • Author Affiliations

       

      Arjun Berera1

      1. School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, UK
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