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q-DEFORMED GAUSSIAN UNITARY ENSEMBLE: SPECTRAL MOMENTS AND GENUS-TYPE EXPANSIONS
- Byun, Sung-soo;
- Forrester, Peter J.;
- Oh, Jaeseong
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0초록
. The eigenvalue probability density function of the Gaussian unitary ensemble permits a q-extension related to the discrete q-Hermite weight and corresponding 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/N2 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.
키워드
Discrete orthogonal polynomial ensemble; q-Hermite weight; spectral moments; Flajolet-Viennot theory; genus expansion; RANDOM MATRICES; CHARACTERISTIC-POLYNOMIALS; ORTHOGONAL POLYNOMIALS; ASYMPTOTICS; LECTURES
- 제목
- q-DEFORMED GAUSSIAN UNITARY ENSEMBLE: SPECTRAL MOMENTS AND GENUS-TYPE EXPANSIONS
- 저자
- Byun, Sung-soo; Forrester, Peter J.; Oh, Jaeseong
- 발행일
- 2026-03-04
- 유형
- Article; Early Access