Fractal droplets in two-dimensional spin glass

被引：22

作者：

Kawashima, N ^{[1
]}

机构：

[1] Tokyo Metropolitan Univ, Dept Phys, Hachioji, Tokyo 1920397, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2000年 / 69卷 / 04期

关键词：

spin glasses; phase transition; disorder; surface; droplet;

D O I：

10.1143/JPSJ.69.987

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The two-dimensional Edwards-Anderson model with Gaussian bond distribution is investigated at T = 0 through a numerical method. Droplet excitations are directly observed. It turns out that the averaged volume of droplets is proportional to l(D) with D = 1.80(2) where l is the spanning length of droplets, revealing their fractal nature. The exponent characterizing the l dependence of the droplet excitation energy is estimated as theta(D)' = -0.42(4), clearly different from the stiffness exponent for domain wall excitations.

引用

页码：987 / 990

页数：4

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