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arXiv 0802.3204cond-mat.dis-nn
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Sherrington-Kirkpatrick模型中的键混沌

Bond chaos in the Sherrington-Kirkpatrick model

T. Aspelmeier

摘要:

我们计算了一个自旋玻璃和一个其自身的副本之间的重叠的概率分布,其中的键在不同程度上被随机扰动。的重叠分布示出去三角洲分布的热力学极限为任意小的扰动(键混沌),我们得到的标度行为的分布与系统大小N在高和低的温度阶段,正是在临界温度。结果与Sherrington-Kirkpatrick模型中的自由能涨落有关。

英文摘要:

We calculate the probability distribution of the overlap between a spin glass and a copy of itself in which the bonds are randomly perturbed in varying degrees. The overlap distribution is shown to go to a delta distribution in the thermodynamic limit for arbitrarily small perturbations (bond chaos) and we obtain the scaling behaviour of the distribution with system size N in the high and low temperature phases and exactly at the critical temperature. The results are relevant for the free energy fluctuations in the Sherrington-Kirkpatrick model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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