• Pancharatnam geometric phase originating from successive partial projections

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    • Keywords


      Geometric phase; Pancharatnam triangle phase; polarized neutrons; partial projection.

    • Abstract


      The spin of a polarized neutron beam subjected to a partial projection in another direction, traces a geodesic arc in the 2-sphere ray space. We delineate the geometric phase resulting from two successive partial projections on a general quantal state and derive the direction and strength of the third partial projection that would close the geodesic triangle. The constraint for the three successive partial projections to be identically equivalent to a net spin rotation regardless of the initial state, is derived.

    • Author Affiliations


      Sohrab Abbas1 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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