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arXiv · 2505.14456

Influence of microscopic parameters on phase behavior of a cell model with Curie-Weiss interaction

O. A. Dobush·M. P. Kozlovskii·I. V. Pylyuk·Yu. O. Plevachuk
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Abstract

We investigate how varying two microscopic parameters - cell volume and the ratio between repulsion and attraction intensities - affect the phase behavior of a cell model with a Curie-Weiss-type interaction. The analysis is based on an exact solution previously derived for this model in the grand canonical ensemble. At sufficiently low temperatures, the cell model exhibits multiple first-order phase transitions. By varying the cell volume and the repulsion-to-attraction ratio, we represent a quantitative comparison of the chemical potential and pressure isotherms, along with the pressure-temperature and temperature-density phase diagrams. Our results demonstrate that altering these microscopic parameters induces quantitative changes in the phase diagrams of the cell model.

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O. A. Dobush, M. P. Kozlovskii, I. V. Pylyuk, Yu. O. Plevachuk. 2025-05-20. Influence of microscopic parameters on phase behavior of a cell model with Curie-Weiss interaction. https://arxiv.org/abs/2505.14456

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