A quantum mechanical determination of the superfluid density |
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Authors: | Dr H Haug K Weiss |
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Institution: | (1) Philips Research Laboratories, Eindhoven, Netherlands |
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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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Keywords: | |
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