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arXiv 1303.3573math.PRmath-phmath.MP
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关于Parisi测度的性质

On properties of Parisi measures

Antonio Auffinger, Wei-Kuo Chen

摘要:

研究了平均场自旋玻璃中混合p自旋模型的函数序参量Parisi测度的结构。在没有外场的情况下,我们证明了Parisi测度满足下列性质.首先,在所有温度下,任何Parisi测度的支集都包含原点。如果它包含一个开区间,则该测度在该区间上具有光滑密度。其次,我们给出了温度参数的一个判别准则,对于这个判别准则,一个Parisi测度既不是对称的,也不是对称破缺的。最后,我们表明,在Sherrington-Kirkpatrick模型,略高于临界温度,在支持的Parisi措施的最大数量是跳跃不连续。这些结果的一个类似物中讨论的球形混合p-自旋模型。作为一种工具,以建立这些事实和独立的兴趣,我们研究相关的Parisi偏微分方程的泛函,并推导出其解决方案的正则性。

英文摘要:

We investigate the structure of Parisi measures, the functional order parameters of mixed p-spin models in mean field spin glasses. In the absence of external field, we prove that a Parisi measure satisfies the following properties. First, at all temperatures, the support of any Parisi measure contains the origin. If it contains an open interval, then the measure has a smooth density on this interval. Next, we give a criterion on temperature parameters for which a Parisi measure is neither Replica Symmetric nor One Replica Symmetry Breaking. Finally, we show that in the Sherrington-Kirkpatrick model, slightly above the critical temperature, the largest number in the support of a Parisi measure is a jump discontinuity. An analogue of these results is discussed in the spherical mixed p-spin models. As a tool to establish these facts and of independent interest, we study functionals of the associated Parisi PDEs and derive regularity properties of their solutions.

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