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2022-03-09
摘要翻译:
我们对三个三维伊辛自旋玻璃模型进行了高统计Monte Carlo模拟:两个无序参数p,p=1/2和p=0.7的+-J伊辛模型和键占位概率p_b=0.45的键稀释+-J模型。对临界点上四次累积量的有限尺度分析表明,这些模型属于相同的普适类,并允许我们估计与主导无关算子omega=1.0(1)有关的尺度修正指数omega。我们还确定了临界指数nu和eta。考虑到标度修正,我们得到nu=2.53(8)和eta=-0.384(9)。
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英文标题:
《The critical behavior of 3D Ising glass models: universality and scaling
  corrections》
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作者:
M. Hasenbusch, A. Pelissetto, E. Vicari
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最新提交年份:
2008
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分类信息:

一级分类:Physics        物理学
二级分类:Disordered Systems and Neural Networks        无序系统与神经网络
分类描述:Glasses and spin glasses; properties of random, aperiodic and quasiperiodic systems; transport in disordered media; localization; phenomena mediated by defects and disorder; neural networks
眼镜和旋转眼镜;随机、非周期和准周期系统的性质;无序介质中的传输;本地化;由缺陷和无序介导的现象;神经网络
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一级分类:Physics        物理学
二级分类:Statistical Mechanics        统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
  We perform high-statistics Monte Carlo simulations of three three-dimensional Ising spin-glass models: the +-J Ising model for two values of the disorder parameter p, p=1/2 and p=0.7, and the bond-diluted +-J model for bond-occupation probability p_b = 0.45. A finite-size scaling analysis of the quartic cumulants at the critical point shows conclusively that these models belong to the same universality class and allows us to estimate the scaling-correction exponent omega related to the leading irrelevant operator, omega=1.0(1). We also determine the critical exponents nu and eta. Taking into account the scaling corrections, we obtain nu=2.53(8) and eta=-0.384(9).
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PDF链接:
https://arxiv.org/pdf/710.198
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