• Dual nature of Ricci scalar and creation of spinless particles

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      https://www.ias.ac.in/article/fulltext/pram/044/04/0333-0345

    • Keywords

       

      R2 gravity; dual nature of Ricci scalar; early Universe; particle production

    • Abstract

       

      Manifestation of Ricci scalar like a matter field as well as a geometrical field, at high energy, has been noted earlier [9]. Here, its interaction with another scalar field is considered in four-dimensional curved space-time. This interaction leads to the production of a large number of pairs of spinless particle-antiparticle due to expansion of the early universe in the vacuum state (provided by temperature dependent Coleman-Weinberg like potential for Ricci field), where spontaneous symmetry breaking takes place.

    • Author Affiliations

       

      K P Sinha1 S K Srivastava1 2

      1. Department of Physics, Indian Institute of Science, Bangalore - 560 012, India
      2. Centre for Theoretical Studies, Indian Institute of Science, Bangalore - 560 012, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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