paper

Critical temperature of the superfluid transition in bose liquids

arXiv:cond-mat/9902097 · doi:10.1103/PhysRevB.60.3052

Abstract

A phenomenological criterion for the superfluid transition is proposed, which is similar to the Lindemann criterion for the crystal melting. Then we derive a new formula for the critical temperature, relating to the mean kinetic energy per particle above the transition. The suppression of the critical temperature in a sufficiently dense liquid is described as a result of the quantum decoherence phenomenon. The theory can account for the observed dependence of on density in liquid helium and results in an estimate K for molecular hydrogen.

4 pages, 1 fig

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