Bose Condensation in Superconductors and Liquid 4He

  • M. D. Girardeau
  • S. Y. Yoon


Calculations on many-body systems containing both composite particles and their constituents are facilitated by the use of representations1–3 in which the composite particles are described in terms of their own dynamic variables. The method3 we shall employ here is based on the familiar idea of the introduction of initially redundant variables corresponding to the composite particles, followed by a canonical transformation which gives these extra modes physical content. This approach is similar to that employed, e.g., in the Bohm—Pines theory of plasma oscillations,4 in which extra plasmon variables were introduced.


Composite Particle Momentum Distribution Cooper Pair Bose Condensation Electron Momentum Distribution 
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Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • M. D. Girardeau
    • 1
  • S. Y. Yoon
    • 1
  1. 1.Institute of Theoretical Science and Department of PhysicsUniversity of OregonEugeneUSA

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