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arXiv math-ph/0403029math-phmath.MP
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Hermite系综和Laguerre系综的特征值:大Beta渐近性

Eigenvalues of Hermite and Laguerre ensembles: Large Beta Asymptotics

Ioana Dumitriu, Alan Edelman

摘要:

在本文中,我们研究了$β$ -Hermite系综和$β$ -Laguerre系综的零阶和一阶本征值涨落,使用我们在\cite{dumitriu02}中描述的矩阵模型,极限为$β\to \infty$ .我们发现,波动描述的高斯方差$O(1/β)$,集中在相应的厄米(Laguerre)多项式的根。我们还表明,近似是非常好的,即使是小值的$β$,绘制精确的水平密度与高斯近似的总和。

英文摘要:

In this paper we examine the zero and first order eigenvalue fluctuations for the $β$-Hermite and $β$-Laguerre ensembles, using the matrix models we described in \cite{dumitriu02}, in the limit as $β\to \infty$. We find that the fluctuations are described by Gaussians of variance $O(1/β)$, centered at the roots of a corresponding Hermite (Laguerre) polynomial. We also show that the approximation is very good, even for small values of $β$, by plotting exact level densities versus sum of Gaussians approximations.

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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