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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/046/05/0315-0322

    • Keywords

       

      Geometric phase; Pancharatnam triangle; parallel transportation

    • Abstract

       

      In mid-1950s, Pancharatnam [1] encountered the geometric phase associated with the evolution along a geodesic triangle on the Poincaré sphere. We generalize his 3-vertex phase and employ it as the fundamental building block, to geometrically construct a general ray-space expression for geometric phase. In terms of a reference ray used to specify geometric phase, we delineate clear geometric meanings for gauge transformations and gauge freedom, which are generally regarded as mere mathematical abstractions.

    • Author Affiliations

       

      Veer Chand Rakhecha1 Apoorva G Wagh1

      1. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai - 400 085, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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