Entropy of the cell fluid model with Curie-Weiss interaction

Fuente: arXiv
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Autori principali: Romanik, R. V., Dobush, O. A., Kozlovskii, M. P., Pylyuk, I. V., Shpot, M. A.
Natura: Preprint
Pubblicazione: 2025
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author Romanik, R. V.
Dobush, O. A.
Kozlovskii, M. P.
Pylyuk, I. V.
Shpot, M. A.
author_facet Romanik, R. V.
Dobush, O. A.
Kozlovskii, M. P.
Pylyuk, I. V.
Shpot, M. A.
contents Entropy of the cell fluid model with Curie-Weiss interaction is obtained in analytical form as a function of temperature and chemical potential. A parametric equation is derived representing the entropy as a function of density. Features of both the entropy per particle and the entropy per cell are investigated at the entropy-density and entropy-chemical potential planes. The considered cell model is a multiple-occupancy model and possesses an infinite sequence of first-order phase transitions at sufficiently low temperatures. We find that the entropy exhibits pronounced minima at around integer-valued particle densities, which may be a generic feature of multiple-occupancy models.
format Preprint
id arxiv_https___arxiv_org_abs_2510_22700
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Entropy of the cell fluid model with Curie-Weiss interaction
Romanik, R. V.
Dobush, O. A.
Kozlovskii, M. P.
Pylyuk, I. V.
Shpot, M. A.
Statistical Mechanics
Entropy of the cell fluid model with Curie-Weiss interaction is obtained in analytical form as a function of temperature and chemical potential. A parametric equation is derived representing the entropy as a function of density. Features of both the entropy per particle and the entropy per cell are investigated at the entropy-density and entropy-chemical potential planes. The considered cell model is a multiple-occupancy model and possesses an infinite sequence of first-order phase transitions at sufficiently low temperatures. We find that the entropy exhibits pronounced minima at around integer-valued particle densities, which may be a generic feature of multiple-occupancy models.
title Entropy of the cell fluid model with Curie-Weiss interaction
topic Statistical Mechanics
url https://arxiv.org/abs/2510.22700