Improved first order mean spherical approximation for simple fluids

Autor:	Hlushak, S., Trokhymchuk, A., Nezbeda, I.
Rok vydání:	2012
Předmět:	Condensed Matter - Soft Condensed Matter
Zdroj:	Condens. Matter Phys., 2011, vol. 14, No. 3, 33004: 1-8
Druh dokumentu:	Working Paper
DOI:	10.5488/CMP.14.33004
Popis:	A perturbation approach based on the first-order mean spherical approximation (FMSA) is proposed. It consists in adopting a hard-sphere plus short-range attractive Yukawa fluid as the novel reference system, over which the perturbative solution of the Ornstein-Zernike equation is performed. A choice of the optimal range of the reference attraction is discussed. The results are compared against conventional FMSA/HS theory and Monte-Carlo simulation data for compressibility factor and vapor-liquid phase diagrams of the medium-ranged Yukawa fluid. Proposed theory keeps the same level of simplicity and transparency, as the conventional FMSA/HS approach does, but shows to be more accurate. Comment: 8 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1202.4260 Zobrazit plný text záznamu View this record from Arxiv