arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.05805cond-mat.dis-nncond-mat.stat-mech
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三维Ising自旋玻璃多种热力学态的证据

Evidence of many thermodynamic states of the three-dimensional Ising spin glass

Wenlong Wang, Mats Wallin, Jack Lidmar

摘要:

本文采用优化布居退火蒙特卡罗方法对具有高斯无序的三维伊辛自旋玻璃进行了低温大尺寸模拟。我们的主要重点是调查纯态的数量关于一个有争议的统计,表征分数的中心峰值的混乱的情况下,重叠函数序参量。我们观察到,这个统计是微妙的和敏感的影响,轻微的波动的综合中心权重的无序平均重叠功能,使渐近增长行为非常难以识别。修改后的统计有效地减少这种相关性进行了研究,基本上单调的增长趋势。温度的影响也进行了研究,发现一个较大的增长率在较高的温度。我们的国家的最先进的模拟和方差减少数据分析表明,许多纯态图片是最有可能的和连贯的。

英文摘要:

We present a large-scale simulation of the three-dimensional Ising spin glass with Gaussian disorder to low temperatures and large sizes using optimized population annealing Monte Carlo. Our primary focus is investigating the number of pure states regarding a controversial statistic, characterizing the fraction of centrally peaked disorder instances, of the overlap function order parameter. We observe that this statistic is subtly and sensitively influenced by the slight fluctuations of the integrated central weight of the disorder-averaged overlap function, making the asymptotic growth behaviour very difficult to identify. Modified statistics effectively reducing this correlation are studied and essentially monotonic growth trends are obtained. The effect of temperature is also studied, finding a larger growth rate at a higher temperature. Our state-of-the-art simulation and variance reduction data analysis suggest that the many pure state picture is most likely and coherent.

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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