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Universality at Weak and Strong Non-Hermiticity Beyond the Elliptic Ginibre Ensemble

Akemann, Gernot, Cikovic, Milan and Venker, Martin (2018) Universality at Weak and Strong Non-Hermiticity Beyond the Elliptic Ginibre Ensemble. Communications in Mathematical Physics, 362 (3). pp. 1111-1141. ISSN 1432-0916

Abstract
We consider non-Gaussian extensions of the elliptic Ginibre ensemble of complex non-Hermitian random matrices by fixing the trace of the matrix XX* with a hard or soft constraint. These ensembles have correlated matrix entries and non-determinantal joint densities of the complex eigenvalues. We study global and local bulk statistics in these ensembles, in particular in the limit of weak non-Hermiticity introduced by Fyodorov, Khoruzhenko and Sommers. Here, the support of the limiting measure collapses to the real line. This limit was motivated by physics applications and interpolates between the celebrated sine and Ginibre kernel. Our results constitute a first proof of universality of the interpolating kernel. Furthermore, in the limit of strong non-Hermiticity, where the support of the limiting measure remains an ellipse, we obtain local Ginibre statistics in the bulk of the spectrum.
Metadata
Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:Abstract Harmonic Analysis; Distribution Theory; Probability Theory; Stochastic Integrals; Several Complex Variables and Analytic Spaces Group Theory and Generalizations
Subjects:Mathematics > Mathematical physics
Mathematics > Probabilities
DCU Faculties and Centres:UNSPECIFIED
Publisher:Springer Verlag
Official URL:https://link.springer.com/article/10.1007/s00220-0...
Copyright Information:Authors
ID Code:31209
Deposited On:14 Jul 2025 11:13 by Martin Venker . Last Modified 14 Jul 2025 11:13
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