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Quantum Chemistry Quantum Thermodynamics

Further On the Fountain Effect in Superfluid Helium

arXiv

Authors: Phil Attard

Year

2022

Paper ID

58445

Status

Preprint

Abstract Read

~2 min

Abstract Words

107

Citations

N/A

Abstract

In the previous paper (Attard 2022d)on the fountain pressure in superfluid helium, it was shown that the experimentally confirmed expression of H. London (1939) was thermodynamically equivalent to equality of chemical potential. However this theoretical equivalence was not reflected in the experimental data. The problem has now been traced to errors in the enthalpy and entropy derived from the measured heat capacity by Donnelly and Barenghi (1998). In this paper the corrected thermodynamic data yields almost exact agreement between the two expressions and the measured fountain pressure. A physical explanation is given for energy minimization as the principle that drives the fountain effect and superfluid flow more generally.

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This paper contributes to the Quantum Thermodynamics research area in the Quantum Articles archive.
It adds a 2022 reference point for readers tracking recent quantum research.
In the previous paper (Attard 2022d)on the fountain pressure in superfluid helium, it was shown that the experimentally confirmed expression of H.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2210.06666 [2] arXiv https://arxiv.org/abs/2210.06666 [3] Publisher https://arxiv.org/abs/2210.06666

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