Universal random matrix correlations of ratios of characteristic polynomials at the spectral edges

Details Universal random matrix correlations of ratios of characteristic polynomials at the spectral edges Universal random matrix correlations of ratios of characteristic polynomials at the spectral edges

2003-04-10

arxiv.org/abs/hep-th/0304095v1

Nucl.Phys.B664:457-476,2003

Physics

High Energy Physics

High Energy Physics - Theory

18 pages

Scientific paper

10.1016/S0550-3213(03)00458-9

It has been shown recently [10] that Cauchy transforms of orthogonal polynomials appear naturally in general correlation functions containing ratios of characteristic polynomials of random NxN Hermitian matrices. Our main goal is to investigate the issue of universality of large N asymptotics for those Cauchy transforms for a wide class of weight functions. Our analysis covers three different scaling regimes: the "hard edge", the "bulk" and the "soft edge" of the spectrum, thus extending the earlier results known for the bulk. The principal tool is to show that for finite matrix size N the auxiliary "wave functions" associated with the Cauchy transforms obey the same second order differential equation as those associated with the orthogonal polynomials themselves.

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