ON THE VARIANCE OF THE INDEX FOR THE GAUSSIAN UNITARY ENSEMBLE

被引:7
|
作者
Witte, N. S. [1 ]
Forrester, P. J. [1 ]
机构
[1] Univ Melbourne, Dept Math & Stat, Melbourne, Vic 3010, Australia
基金
澳大利亚研究理事会;
关键词
Random matrices; large deviations; Painleve equations;
D O I
10.1142/S2010326312500104
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We derive simple linear, inhomogeneous recurrences for the variance of the index by utilizing the fact that the generating function for the distribution of the number of positive eigenvalues of a Gaussian unitary ensemble is a tau-function of the fourth Painleve equation. From this we deduce a simple summation formula, several integral representations and finally an exact hypergeometric function evaluation for the variance.
引用
收藏
页数:25
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