2004/04/28 by Yuanxing Gui, Yuan-Xing Gui, Gui, Yuan-Xing
Chemistry · Engineering · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #FOS: Physical sciences #Phase Equilibria and Thermodynamics #Scientific Research and Discoveries #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.stat-mech
paper · pdf · doi:10.48550/arxiv.cond-mat/0404667
7 pages, 2 figures, Latex
openalex publication_date 2004/04/28 · arxiv created 2004/04/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Liquid-gas phase transition in statistical mechanics is a long-standing dilemma not yet well explained. In this paper we propose a novel approach to this dilemma, by: 1). Putting forth a new space homogeneity assumption. 2). Giving a new formulation-- the mean distance expansion, instead of Mayer's Cluster Expansion, to calculate the intermolecular potential and partition function for a classical system. 3). Explaining how the separation of two phases occurs below the critical temperature Tc and what is the gap between two phases. 4). Calculating the physical quantities in a system of coexistent vapor and liquid, and comparing them with the experimental results. Qualitative, and some quantitative, consistencies are obtained. So the statistical explanation on first order liquid-gas phase transition is solved in principle.