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arXiv 2302.12082math.PR
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Jacobi 系综随机矩阵的极端特征值

Extreme eigenvalues of random matrices from Jacobi ensembles

B. Winn

AI总结:

本文研究 Jacobi β-Ensembles 大矩阵的极端特征值分布,在 β 任意、α₁ 为整数时给出最小特征值的两项渐近公式,并推广至最大特征值及特殊情形。

摘要:

在 β>0 任意且模型参数之一 α₁ 为整数的情形下,针对大尺寸矩阵,推导了 Jacobi β-Ensembles 最小特征值概率分布函数的两项渐近公式。通过一个直接变换,这进一步给出了最大特征值分布的相应结果。显式表达式以多变量超几何函数表示,并且发现一阶修正与主导阶极限分布函数的导数成正比。在 β=2 和/或 α₁ 取较小值的某些特殊情形中,给出了涉及更常见函数(例如第一类修正 Bessel 函数)的显式公式。

英文摘要:

Two-term asymptotic formulae for the probability distribution functions for the smallest eigenvalue of the Jacobi $ β$-Ensembles are derived for matrices of large size in the régime where $ β> 0 $ is arbitrary and one of the model parameters $ α_1 $ is an integer. By a straightforward transformation this leads to corresponding results for the distribution of the largest eigenvalue. The explicit expressions are given in terms of multi-variable hypergeometric functions, and it is found that the first-order corrections are proportional to the derivative of the leading order limiting distribution function. In some special cases $ β= 2 $ and/or small values of $ α_1 $, explicit formulae involving more familiar functions, such as the modified Bessel function of the first kind, are presented.

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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