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arXiv 0911.0362cond-mat.dis-nncond-mat.stat-mechmath-phmath.MP
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有限维Ising自旋玻璃自由能的微扰研究

The Ising spin glass in finite dimensions: a perturbative study of the free energy

Tamas Temesvari

摘要:

本文用量子场论研究了一级微扰下伊辛自旋玻璃的n依赖自由能。大样本到样本的自由能偏离其淬火平均证明是高斯,独立的特殊结构的序参量。详细研究了副本对称相和(无限能级)副本对称破缺相之间的自由能差:当d>8时,其为零的线n(T)与Almeida-Almeida-less线重合。维度域6<d<8更复杂,并且可能有几种情况。

英文摘要:

Replica field theory is used to study the n-dependent free energy of the Ising spin glass in a first order perturbative treatment. Large sample-to-sample deviations of the free energy from its quenched average prove to be Gaussian, independently of the special structure of the order parameter. The free energy difference between the replica symmetric and (infinite level) replica symmetry broken phases is studied in details: the line n(T) where it is zero coincides with the Almeida-Thouless line for d>8. The dimensional domain 6<d<8 is more complicated, and several scenarios are possible.

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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