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Asymptotic temperature dependence of the superfluid density in liquid 4He

Torsten Fliessbach

cond-matarXiv:cond-mat/9901175

Abstract

In a modified ideal Bose gas model we derive an expression for the temperature dependence of the superfluid fraction in liquid 4He. This expression leads to a fit formula for the asymptotic temperature dependence that reproduces the data significantly better than comparable formulas.

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