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arXiv 1109.3249math.PR
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外场作用下Sherrington-Kirkpatrick模型的无序混沌

Disorder chaos in the Sherrington-Kirkpatrick model with external field

Wei-Kuo Chen

摘要:

本文考虑一个自旋系统,它是由两个不同的Sherrington-Kirkpatrick(SK)模型耦合而成的,它们具有相同的温度和外场,并且它们的哈密顿量是相关的。SK模型的无序混沌猜想指出,在相应的吉布斯测度下的重叠基本上集中在一个单一的值。在没有外场的情况下,这一说法首先由Chatterjee [Disorder chaos and multiple valley in spin glasses(2009)Preprint]证实。本文利用Guerra的对称性破缺界,证明了SK模型在外场存在下也是混沌的,并且重叠的位置由一个与Guerra界和Parisi测度有关的方程决定.

英文摘要:

We consider a spin system obtained by coupling two distinct Sherrington-Kirkpatrick (SK) models with the same temperature and external field whose Hamiltonians are correlated. The disorder chaos conjecture for the SK model states that the overlap under the corresponding Gibbs measure is essentially concentrated at a single value. In the absence of external field, this statement was first confirmed by Chatterjee [Disorder chaos and multiple valleys in spin glasses (2009) Preprint]. In the present paper, using Guerra's replica symmetry breaking bound, we prove that the SK model is also chaotic in the presence of the external field and the position of the overlap is determined by an equation related to Guerra's bound and the Parisi measure.

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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