• Gauge theories of weak and strong gravity

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      https://www.ias.ac.in/article/fulltext/pram/023/02/0205-0214

    • Keywords

       

      Gauge theories; strong gravity; symmetry breaking; unification of forces

    • Abstract

       

      A review of some recent papers on gauge theories of weak and strong gravity is presented. For weak gravity, SL(2, C) gauge theory along with tetrad formulation is described which yields massless spin-2 gauge fields (quanta gravitons). Next a unified SL(2n,C) model is discussed along with Higgs fields. Its internal symmetry is SU(n). The free field solutions after symmetry breaking yield massless spin-1 (photons) and spin-2 (gravitons) gauge fields and also massive spin-1 and spin-2 bosons. The massive spin-2 gauge fields are responsible for short range superstrong gravity.

      Higgs-fermion interaction can lead to baryon and lepton number non-conservation. The relationship of strong gravity with other forces is also briefly considered.

    • Author Affiliations

       

      K P Sinha1

      1. 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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