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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/015/03/0291-0307

    • Keywords

       

      Non-relativistic field theory; Feynman rules; charge form-factor of an atom; Kramers-Heisenberg formula; Van der Waals interaction

    • Abstract

       

      A quantum field theoretic formulation of atomic collision phenomena involving non-relativistic free and bound systems is developed and a calculational procedure in terms of Feynman diagrams is prescribed. Matrix elements of several atomic collision processes have been calculated. In most cases standard quantum mechanical results are reproduced. But in some cases new terms appear in the scattering matrix whose contribution though negligibly small in the low energy region, become important at higher energies.

    • Author Affiliations

       

      Babaji Charan Mishra1 Trilochan Pradhan1

      1. Institute of Physics, A/105 Saheed Nagar, Bhubaneswar - 751 007, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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