Abstract
The ordinary thermodynamics corresponds to the equilibrium ground state of the system. We present a model making it possible to construct a “second thermodynamics,” an analogue of an equilibrium state of a superfluid, based on which we explain the effect of the appearance of a “bottleneck” in a thin capillary for a moving superfluid if it is heated to the critical point in the “second” thermodynamics.
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Maslov, V.P. A Weakly Nonideal Bose Gas Model Leading to the Fountain Effect. Theoretical and Mathematical Physics 135, 889–892 (2003). https://doi.org/10.1023/A:1024043323433
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DOI: https://doi.org/10.1023/A:1024043323433