On the importance of many-body interactions in the effective fluid model of asymmetric hardsphere mixtures

被引：18

作者：

Amokrane, S ^{[1
]}

Ayadim, A ^{[1
]}

Malherbe, JG ^{[1
]}

机构：

[1] Univ Paris 12, Fac Sci & Technol, Grp Phys Milieux Denses, F-94010 Creteil, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2003年 / 15卷 / 48期

关键词：

D O I：

10.1088/0953-8984/15/48/005

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Comparison of solute pair distribution functions in the true mixture and in the effective fluid is used as a diagnosis of the importance of many-body interactions in the effective fluid model of binary asymmetric hard-sphere mixtures. Results from integral equations and density functional theories are compared with simulation data for size ratios R = 3.33, 10 and 20. Small deviation from the pair interaction approximation are detected up to R = 20. The origin of these deviations suggests that many-body effects might be more important in non-hard-sphere mixtures exhibiting long range solute-solvent correlations.

引用

页码：S3443 / S3453

页数：11

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