The square-well fluid: A thermodynamic geometric view

被引：2

作者：

Lopez-Picon, J. L. ^{[1
]}

Escamilla-Herrera, L. F. ^{[1
,2
]}

Torres-Arenas, Jose ^{[1
]}

机构：

[1] Univ Guanajuato, Div Ciencias & Ingn Campus Leon, AP E-143, Guanajuato 37150, Mexico

[2] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2022年 / 368卷

关键词：

Statistical mechanics; Square -well fluid; Thermodynamic geometry; > VAPOR-LIQUID-EQUILIBRIUM; EQUATION-OF-STATE; MONTE-CARLO; RIEMANNIAN GEOMETRY; MOLECULAR-DYNAMICS; VARIABLE RANGE; POTENTIALS; BEHAVIOR;

D O I：

10.1016/j.molliq.2022.120607

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The square-well fluid with hard-sphere diameters is studied within the framework of Thermodynamic Geometry (TG). Coexistence and spinodal curves, as well as the Widom line for ranges k* = 1:25; 1:5; 2:0; 3:0 for this fluid are carefully studied using geometric methods. We are able to show that, unlike coexistence curves, an exact result can be given along all the thermodynamic space and for all potential ranges for spinodal curves. Additionally, R-Widom line which is defined as the locus of extrema of the curvature scalar is calculated as a function of the potential range, satisfying near the crit-ical point a relation that bears a resemblance with the Clausius-Clapeyron equation. Besides, a brief exploration of scalar curvature criticality is also provided.(c) 2022 Elsevier B.V. All rights reserved.

引用

页数：6

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