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arXiv 1005.3096math-phmath.MP
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GUE某些微扰中的边缘效应

Edge effects in some perturbations of the GUE

K. E. Bassler, P. J. Forrester, N. E. Frankel

摘要:

考虑了GUE矩阵的一种加边,其中加边行由对角线外的零均值复高斯N $[0,σ/2] + i {\rm N}[0,σ/2]$和对角线上的实高斯N $[μ,σ/\sqrt{2}]$组成.我们计算这样的矩阵的特征值概率函数的显式形式,以及通过重复边界得到的矩阵。相关性一般是行列式的,在单边界的情况下,计算相关核的显式形式。在大的$N$限制,它示出,$μ$和/或$σ$可以被调谐,以诱导分离的最大特征值。这种效果被证明是由一个单一的参数,通用的相关内核控制。

英文摘要:

A bordering of GUE matrices is considered, in which the bordered row consists of zero mean complex Gaussians N$[0,σ/2] + i {\rm N}[0,σ/2]$ off the diagonal, and the real Gaussian N$[μ,σ/\sqrt{2}]$ on the diagonal. We compute the explicit form of the eigenvalue probability function for such matrices, as well as that for matrices obtained by repeating the bordering. The correlations are in general determinantal, and in the single bordering case the explicit form of the correlation kernel is computed. In the large $N$ limit it is shown that $μ$ and/or $σ$ can be tuned to induce a separation of the largest eigenvalue. This effect is shown to be controlled by a single parameter, universal correlation kernel.

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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