A few results on non-Hermitian random matrices

Yan Fyodorov (KCL, London)

Apr 16. 2026, 09:00 — 10:00

Motivated by growing interest in non-Hermitian random matrices as a framework for description of universal characteristics of dissipative chaotic quantum many-body systems, I will discuss a few results  on  recently identified universality class AI^{\dagger} (complex symmetric matrices) as well as on a more standard  complex Ginibre matrices (class A).

In the former class  the exact finite-N mean eigenvalue density will be discussed together with its bulk and edge limits, the edge behaviour conjectured to be a characteristic feature of different non-Hermitian universality classes.    In the Ginibre case  I will present  an explicit expression for the parametric covariance of spectral densities at the microscopic scale and ensuing parametric number variance in the bulk of the spectrum.  A relation between parametric correlations  and the distribution of the eigenvector non-orthogonality factor, which attracted considerable interest in recent years, will be demonstrated. The first part of the talk will be based on  a joint work arXiv:2511.21643 with Gernot Akemann and Dmitry Savin  and second part on a joint work in progress  with Bertrand Lacroix-A-Chez-Toine.

Further Information
Venue:
ESI Boltzmann Lecture Hall
Associated Event:
Random Matrices and Operators (Workshop)
Organizer(s):
Nathanael Berestycki (U of Vienna)
Paul Bourgade (CIMS, New York)
Giorgio Cipolloni (U Tor Vergata, Rome)