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A quantum mechanical determination of the superfluid density

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Physik der kondensierten Materie

Abstract

The constituting conservation laws for a superfluid are quantum mechanically derived. Using thermodynamic relations the superfluid density is model-independently expressed in terms of reduced-density matrices. The general relation is illustrated for the Bogolubov model, and for two other approximations for the two-particle reduced-density matrix. The resulting relations between the densities of the super component and of the condensate are discussed.

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Authors and Affiliations

  1. Philips Research Laboratories, Eindhoven, Netherlands

    H. Haug & K. Weiss

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  1. H. Haug
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  2. K. Weiss
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Haug, H., Weiss, K. A quantum mechanical determination of the superfluid density. Phys kondens Materie 14, 324–335 (1972). https://doi.org/10.1007/BF02422689

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  • DOI: https://doi.org/10.1007/BF02422689

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