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arXiv 1507.08520cond-mat.dis-nncond-mat.stat-mechmath-phmath.MPmath.PR
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有限尺寸球形p=2-自旋玻璃模型的大时间零温动力学

Large time zero temperature dynamics of the spherical p=2-spin glass model of finite size

Yan V. Fyodorov, Anthony Perret, Gregory Schehr

摘要:

当自旋数$N$较大但{ \it有限}时,我们重新研究了球形全连通$p = 2$ -自旋玻璃模型的长时间动力学.在$T=0$的系统是在一个(平凡的)自旋玻璃相,并在长时间尺度$t \gtrsim {\cal O}{(N^{2/3})}$,我们表明,物理观测的行为,如能量,相关性和响应函数,是由密度的近极端的本征值在边缘的耦合矩阵$J$的频谱,因此非自平均。我们表明,这些观测值的后期衰减,一旦平均超过混乱,是由新的普遍指数,我们精确计算控制。

英文摘要:

We revisit the long time dynamics of the spherical fully connected $p = 2$-spin glass model when the number of spins $N$ is large but {\it finite}. At $T=0$ where the system is in a (trivial) spin-glass phase, and on long time scale $t \gtrsim {\cal O}{(N^{2/3})}$ we show that the behavior of physical observables, like the energy, correlation and response functions, is controlled by the density of near-extreme eigenvalues at the edge of the spectrum of the coupling matrix $J$, and are thus non self-averaging. We show that the late time decay of these observables, once averaged over the disorder, is controlled by new universal exponents which we compute exactly.

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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