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arXiv · 1412.1244

Phase diagram of fluid phases in ${}^3$He -${}^4$He mixtures

N. Farahmand Bafi·A. Maciołek·S. Dietrich
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Abstract

Fluid parts of the phase diagram of ${}^3$He -${}^4$He mixtures are obtained from a mean-field analysis of a suitable lattice gas model for binary liquid mixtures. The proposed model takes into account the continuous rotational symmetry O(2) of the superfluid degrees of freedom associated with ${}^4$He and includes the occurrence of vacancies. This latter degree of freedom allows the model to exhibit a vapor phase and hence can provide the theoretical framework to describe the experimental conditions for measurements of tricritical Casimir forces in ${}^3$He -${}^4$He wetting films.

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N. Farahmand Bafi, A. Maciołek, S. Dietrich. 2014-12-03. Phase diagram of fluid phases in ${}^3$He -${}^4$He mixtures. https://doi.org/10.1103/physreve.91.022138

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