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arXiv 1003.2569cond-mat.dis-nncond-mat.stat-mech
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实验尺度下自旋玻璃相的性质

Nature of the spin-glass phase at experimental length scales

Janus Collaboration, R. Alvarez Banos, A. Cruz, L. A. Fernandez, J. M. Gil-Narvion, A. Gordillo-Guerrero, M. Guidetti, A. Maiorano, F. Mantovani, E. Marinari, V… 展开作者

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

摘要:

本文对三维Ising自旋玻璃进行了大量的低温平衡模拟。雅努斯专用计算机使我们能够平衡,使用平行回火,L=32晶格下降到T=0.64 Tc。我们证明了平衡有限尺寸模拟的相关性,以了解实验非平衡自旋玻璃在物理极限,通过建立一个时间长度字典。我们的结论是,非平衡实验进行的时间尺度为一个小时,可以匹配的平衡结果L=110晶格。详细研究了自旋和链重叠的概率分布函数以及它们的关联函数,表明复本对称性破缺是物理相关长度尺度的适当理论框架。此外,我们改进了现有的方法,以确保在并行回火模拟的平衡。

英文摘要:

We present a massive equilibrium simulation of the three-dimensional Ising spin glass at low temperatures. The Janus special-purpose computer has allowed us to equilibrate, using parallel tempering, L=32 lattices down to T=0.64 Tc. We demonstrate the relevance of equilibrium finite-size simulations to understand experimental non-equilibrium spin glasses in the thermodynamical limit by establishing a time-length dictionary. We conclude that non-equilibrium experiments performed on a time scale of one hour can be matched with equilibrium results on L=110 lattices. A detailed investigation of the probability distribution functions of the spin and link overlap, as well as of their correlation functions, shows that Replica Symmetry Breaking is the appropriate theoretical framework for the physically relevant length scales. Besides, we improve over existing methodologies to ensure equilibration in parallel tempering simulations.

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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