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Weakly-Bound Excitation States in Crystals

  • L. P. Pitaevsky
Conference paper

Abstract

In the present paper it is shown that in crystals bound states of two elementary excitations (two phonons, a phonon and an electron) may be formed at arbitrarily weak interaction between them. This occurs in the vicinity of some special points in the quasimomentum space of the excitations.

Keywords

Binding Energy Saddle Point Green Function Momentum Space Optical Phonon 
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Copyright information

© Plenum Press, New York 1976

Authors and Affiliations

  • L. P. Pitaevsky
    • 1
  1. 1.Institute of Physical ProblemsAcademy of Sciences of the USSRMoscowUSSR

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