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A variational approach to superfluidity

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Abstract

A variational approach to problems in quantum statistical mechanics is described and it is shown how to determine the best quasi-free approximation to the equilibrium state. The relation between this approximation and the Bogoliubov approximation in superfluidity is discussed.

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Authors and Affiliations

  1. Faculty of Mathematics, Open University, Milton Keynes, England

    R. H. Critchley & A. I. Solomon

  2. Dublin Institute for Advanced Studies, Dublin, Ireland

    R. H. Critchley & A. I. Solomon

Authors
  1. R. H. Critchley
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  2. A. I. Solomon
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Critchley, R.H., Solomon, A.I. A variational approach to superfluidity. J Stat Phys 14, 381–393 (1976). https://doi.org/10.1007/BF01030201

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