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arXiv 1010.0637cond-mat.dis-nn
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Ising自旋玻璃的低温质谱

Low Temperature Mass Spectrum in the Ising Spin Glass

A. Crisanti, C. De Dominicis

摘要:

本文研究了Sherrington-Kirkpatrick模型在T=0附近的Hessian谱,其特征值是在平均场解附近展开的裸传播子的质量.在极限值$T\ll 1$中,可以识别两个区域。第一个是接近0的$x$,其中$x$是Parisi复本对称性破缺方案参数。在这个区域的光谱的海森是不平凡的,并保持完整的复本对称性破缺状态的结构在较高的温度下发现。在第二个区域$T\ll x \leq 1$作为$T\to 0$,带典型的全复本对称性破缺状态崩溃,只有两个本征值被发现:零一个和一个积极的。我们认为,这一地区有一个液滴样的行为。在极限$T\to 0$中,完整的复本对称性破缺区域的宽度收缩到零,并且仅液滴状情形存活。

英文摘要:

We study the spectrum of the Hessian of the Sherrington-Kirkpatrick model near T=0, whose eigenvalues are the masses of the bare propagators in the expansion around the mean-field solution. In the limit $T\ll 1$ two regions can be identified. The first for $x$ close to 0, where $x$ is the Parisi replica symmetry breaking scheme parameter. In this region the spectrum of the Hessian is not trivial, and maintains the structure of the full replica symmetry breaking state found at higher temperatures. In the second region $T\ll x \leq 1$ as $T\to 0$, the bands typical of the full replica symmetry breaking state collapse and only two eigenvalues are found: a null one and a positive one. We argue that this region has a droplet-like behavior. In the limit $T\to 0$ the width of the full replica symmetry breaking region shrinks to zero and only the droplet-like scenario survives.

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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