• Semiclassical theory for many-body fermionic systems

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      https://www.ias.ac.in/article/fulltext/pram/048/02/0503-0516

    • Keywords

       

      Fermionic systems; Weyl-Wigner series

    • Abstract

       

      We present a treatment of many-body fermionic systems that facilitates an expression of well-known quantities in a series expansion inħ. The ensuing semiclassical result contains, to a leading order of the response function, the classical time correlation function of the observable followed by the Weyl-Wigner series; on top of these terms are the periodic-orbit correction terms. The treatment given here starts from linear response assumption of the many-body theory and in its connection with semiclassical theory, it assumes that the one-body quantal system has a classically chaotic dynamics. Applications of the framework are also discussed.

    • Author Affiliations

       

      Pierre Gaspard1 Sudhir R Jain1

      1. Faculté des Sciences and Center for Nonlinear Phenomena and Complex Systems, Université Libre de Bruxelles, Campus Plaine C.P. 231, Boulevard du Triomphe, Brussels - B-1050, Belgium
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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