English

Critical edge statistics for deformed GinUEs

Probability 2025-04-03 v2

Abstract

For the complex Ginibre ensemble subjected to an additive perturbation by a deterministic normal matrix X0X_0, we establish that under specific spectral conditions on X0X_0, only two distinct types of local spectral statistics emerge at the spectral edge: GinUE statistics and critical statistics, which respectively correspond to regular and quadratically vanishing spectral points. The critical statistics, as a non-Hermitian analogue of Pearcey statistics in random matrix theory, describes a novel point process on the complex plane. This identifies the third (and likely final) universal statistics in non-Hermitian random matrix theory, after the established GinUE bulk and edge universality classes, and represents the primary achievement of this paper.

Cite

@article{arxiv.2311.13227,
  title  = {Critical edge statistics for deformed GinUEs},
  author = {Dang-Zheng Liu and Lu Zhang},
  journal= {arXiv preprint arXiv:2311.13227},
  year   = {2025}
}

Comments

A unified framework that simultaneously addresses both scenarios of critical spectral points;add Remark 1.4, 2 figures;46 pages

R2 v1 2026-06-28T13:28:18.707Z