𝑞-Deformed Gaussian unitary ensemble: Spectral moments and genus-type expansions
Abstract
The eigenvalue probability density function of the Gaussian unitary ensemble permits a q q -extension related to the discrete q q -Hermite weight and corresponding q q -orthogonal polynomials. A combinatorial counting method is used to specify a positive sum formula for the spectral moments of this model. The leading two terms of the scaled 1 / N 2 1/N^2 genus-type expansion of the moments are evaluated explicitly in terms of the incomplete beta function. Knowledge of these functional forms allows for the smoothed leading eigenvalue density and its first correction to be determined analytically.
Fields of Study & Subjects
Random Matrices and Applications
Mathematical functions and polynomials
Advanced Combinatorial Mathematics
Publication details
- Journal / source
- Transactions of the American Mathematical Society
- Publisher
- American Mathematical Society (AMS)
- Volume
- 379
- Issue
- 8
- Pages
- 5903–5940
- Publication date
- 4 March 2026
- Language
- EN