Sum rule relating pair fluctuations and the superfluid mass density in helium four

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We derive a relation between the pairing function χq, of which Ristig has recently made a variational calculation for 4He, and the contribution of pairing fluctuations to the superfluid mass density in a bose fluid. We have shown that the two fluid hydrodynamic equations are unchanged in the presence of a pair condensate, though the microscopic identification of ρ{variant}s is changed.

Original languageEnglish (US)
Pages (from-to)1389-1390
Number of pages2
JournalPhysica B+C
Issue number1-3
StatePublished - Jan 1 1981


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