Are ground states of 3d±J spin glasses ultrametric?

被引：20
|
作者：
Hartmann, AK [1 ]
机构：
[1] Inst Theoret Phys, D-69120 Heidelberg, Germany
来源：
EUROPHYSICS LETTERS | 1998年 / 44卷 / 02期
关键词：
D O I：
10.1209/epl/i1998-00464-8
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Ground states of 3d EA Ising spin glasses are calculated for sizes up to 14(3) using a combination of a genetic algorithm and Cluster-Exact Approximation. Evidence for an ultrametric structure is found by studying triplets of independent ground states where one or two values of the three overlaps are fixed.
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页码：249 / 254
页数：6
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