Subleading long-range interactions and violations of finite size scaling

被引:31
|
作者
Dantchev, D
Rudnick, J
机构
[1] Bulgarian Acad Sci, Inst Mech, Sofia 1113, Bulgaria
[2] Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90095 USA
来源
EUROPEAN PHYSICAL JOURNAL B | 2001年 / 21卷 / 02期
关键词
D O I
10.1007/s100510170201
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We study the behavior of systems in which the interaction contains a long-range component that does not dominate the critical behavior. Such a component is exemplified by the van der Waals force between molecules in a simple liquid-vapor system. In the context of the mean spherical model with periodic boundary conditions we are able to identify, for temperatures close above T,, finite-size contributions due to the subleading term in the interaction that are dominant in this region decaying algebraically as a function of L. This mechanism goes beyond the standard formulation of the finite-size scaling but is to be expected in real physical systems. We also discuss other ways in which critical point behavior is modified that are of relevance for analysis of Monte Carlo simulations of such systems.
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页码:251 / 268
页数:18
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