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arXiv 1107.5772cond-mat.dis-nncond-mat.stat-mech
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三维Edwards-Anderson自旋玻璃中重叠分布的样品间涨落

Sample-to-sample fluctuations of the overlap distributions in the three-dimensional Edwards-Anderson spin glass

The Janus Collaboration, R. Alvarez Baños, A. Cruz, L. A. Fernandez, J. M. Gil-Narvion, A. Gordillo-Guerrero, M. Guidetti, D. Iñiguez, A. Maiorano, F. Mantovani… 展开作者

The Janus Collaboration, R. Alvarez Baños, A. Cruz, L. A. Fernandez, J. M. Gil-Narvion, A. Gordillo-Guerrero, M. Guidetti, D. Iñiguez, A. Maiorano, F. Mantovani, E. Marinari, V. Martin-Mayor, J. Monforte-Garcia, A. Muñoz-Sudupe, D. Navarro, G. Parisi, S. Perez-Gaviro, F. Ricci-Tersenghi, J. J. Ruiz-Lorenzo, S. F. Schifano, B. Seoane, A. Tarancon, R. Tripiccione, D. Yllanes

摘要:

我们研究了三维Edwards-Anderson自旋玻璃在临界温度以下的大尺度平衡态模拟中重叠几率密度的样品间涨落。超度量、随机稳定性和重叠等价性对重叠概率密度的矩施加了约束,这些矩可以根据数值数据进行测试。我们发现了与Ghirlanda-Guerra预测的小偏差,随着系统大小的增加,偏差会变小。我们还关注重叠分布的形状,将数值数据与类似平均场的预测进行比较,其中通过用宽峰代替δ函数来考虑有限尺寸效应

英文摘要:

We study the sample-to-sample fluctuations of the overlap probability densities from large-scale equilibrium simulations of the three-dimensional Edwards-Anderson spin glass below the critical temperature. Ultrametricity, Stochastic Stability and Overlap Equivalence impose constraints on the moments of the overlap probability densities that can be tested against numerical data. We found small deviations from the Ghirlanda-Guerra predictions, which get smaller as system size increases. We also focus on the shape of the overlap distribution, comparing the numerical data to a mean-field-like prediction in which finite-size effects are taken into account by substituting delta functions with broad peaks

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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