Theory of random matrices with strong level confinement

Details Theory of random matrices with strong level confinement Theory of random matrices with strong level confinement

1995-10-02

arxiv.org/abs/cond-mat/9510002v3

Physics

Condensed Matter

4 pages (latex), Several misprints corrected. Extended version available at cond-mat/9604078

Scientific paper

Unitary ensembles of large N x N random matrices with a non-Gaussian probability distribution P[H] ~ exp{-TrV[H]} are studied using a theory of polynomials orthogonal with respect to exponential weights. Asymptotically exact expressions for density of levels, one- and two-point Green's functions are calculated. We show that in the large-N limit the properly rescaled local eigenvalue correlations are independent of P[H] while global smoothed connected correlations depend on P[H] only through the endpoints of spectrum. We also establish previously unknown intimate connection between structure of Szeg\"o function entering strong polynomial asymptotics and mean-field equation by Dyson.

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