arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1508.01232cond-mat.stat-mechcond-mat.dis-nn
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揭示类p-自旋玻璃体系中多能级超度规树的一种方法

A method that reveals the multi-level ultrametric tree hidden in p-spin glass like systems

R. Baviera, M. A. Virasoro

摘要:

在研究像自旋玻璃这样的无序模型时,感兴趣的关键对象是位形空间中定义的粗糙能量超曲面。吉布斯-玻尔兹曼配分函数的统计力学计算给出了理解系统作为温度函数的平衡行为所必需的信息,但如果我们对超曲面的更一般的方面感兴趣,它是不够的:例如,它没有给我们不同尺度下的不同粗糙度。在复本对称性破缺(RSB)方法的背景下,我们在这里讨论一个相当简单的扩展,可以提供一个更详细的图片。该方法的吸引力在于它在概念上是透明的,并且额外的计算相当简单。我们认为,这种方法揭示了一个超度量组织与许多水平的模型,如p-自旋玻璃,当我们包括鞍点。在这第一篇论文中,我们提出了详细的计算球形p-自旋玻璃模型,我们发现,相应的递减Parisi函数$q(x)$代码这个隐藏的超度量组织。

英文摘要:

In the study of disordered models like spin glasses the key object of interest is the rugged energy hypersurface defined in configuration space. The statistical mechanics calculation of the Gibbs-Boltzmann Partition Function gives the information necessary to understand the equilibrium behavior of the system as a function of the temperature but is not enough if we are interested in more general aspects of the hypersurface: it does not give us, for instance, the different degrees of ruggedness at different scales. In the context of the Replica Symmetry Breaking (RSB) approach we discuss here a rather simple extension that can provide a much more detailed picture. The attractiveness of the method relies in that it is conceptually transparent and the additional calculations are rather straightforward. We think that this approach reveals an ultrametric organisation with many levels in models like p-spin glasses when we include saddle points. In this first paper we present the detailed calculations for the spherical p-spin glass model where we discover that the corresponding decreasing Parisi function $q(x)$ codes this hidden ultrametric organisation.

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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