Correlation length of the two-dimensional Ising spin glass with bimodal interactions

被引：28
|
作者：
Katzgraber, HG [1 ]
Lee, LW
机构：
[1] ETH Honggerberg, CH-8093 Zurich, Switzerland
[2] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.71.134404
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study the correlation length of the two-dimensional Edwards-Anderson Ising spin glass with bimodal interactions using a combination of parallel tempering Monte Carlo updates and a rejection-free cluster algorithm in order to speed up equilibration. Our results show that the correlation length grows similar to exp(2J/T) suggesting through hyperscaling that the degenerate ground state is separated from the first excited state by an energy gap similar to 4J, as would naively be expected.
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页数：4
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