Nonequilibrium dynamics in two-dimensional Ising spin glass

This paper investigates the nonequilibrium dynamics of two-dimensional Ising spin glass by dynamical Monte Carlo simulations. A new method is developed to quantitatively measure the age of domain growth. Using this method it investigates how temperature shift affects the effective age of domain grow...

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Bibliographic Details
Published in:Chinese physics B 2011-04, Vol.20 (4), p.465-470, Article 047501
Main Author: 张开成 朱岩
Format: Article
Language:English
Subjects:
模型预测
温度变化
自旋玻璃态
蒙特卡罗模拟
非平衡
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Summary:This paper investigates the nonequilibrium dynamics of two-dimensional Ising spin glass by dynamical Monte Carlo simulations. A new method is developed to quantitatively measure the age of domain growth. Using this method it investigates how temperature shift affects the effective age of domain growth. It finds that the T-shift dependence of the effective age follows the prediction of the droplet model quite well. It also investigates the overlap length between the spin glass states as well as the correlated flips of spins, which are not consistent with the theoretical predictions. The possible reasons are discussed.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/4/047501