IMPROVED LANGEVIN METHODS FOR SPIN SYSTEMS

被引：5

作者：

DRUMMOND, IT

HORGAN, RR

机构：

[1] Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, CB3 9EW, Silver Street

来源：

PHYSICS LETTERS B | 1993年 / 302卷 / 2-3期

关键词：

D O I：

10.1016/0370-2693(93)90396-Y

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate methods for variance reduction and the elimination of systematic error in a Fourier accelerated Langevin scheme for general spin models. We present results for the SU (3) X SU (3) /SU (3) model in two dimensions that are consistent with those from multi-grid methods. From a study of lattices of sizes up to 64 x 64 and for correlation lengths up to 8 lattice spacings we argue that the timing for the Langevin method makes it comparable to multi-grid for a given level of error.

引用

页码：271 / 278

页数：8

共 12 条

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