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arXiv 2207.00546math.PRmath-phmath.MP
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广义Wigner矩阵的最大eigenvalue的Tracy-Widom定量律

Quantitative Tracy-Widom laws for the largest eigenvalue of generalized Wigner matrices

Kevin Schnelli, Yuanyuan Xu

摘要:

证明了当矩阵维数$N$趋于无穷大时,任意广义Wigner矩阵$H$的最大特征值的涨落以接近$O(N^{-1/3})$的速率收敛到Tracy-Widom定律.我们允许$H$的项的方差具有不同的值,但具有可比的大小,使得$\sum_{i} \mathbb{E}|h_{ij}|^2=1$。我们的结果改进了Bournard [8]的前一个速率$O(N^{-2/9})$,并且证明依赖于边缘附近的第一长时间格林函数比较定理,而没有二阶矩匹配限制。

英文摘要:

We show that the fluctuations of the largest eigenvalue of any generalized Wigner matrix $H$ converge to the Tracy-Widom laws at a rate nearly $O(N^{-1/3})$, as the matrix dimension $N$ tends to infinity. We allow the variances of the entries of $H$ to have distinct values but of comparable sizes such that $\sum_{i} \mathbb{E}|h_{ij}|^2=1$. Our result improves the previous rate $O(N^{-2/9})$ by Bourgade [8] and the proof relies on the first long-time Green function comparison theorem near the edges without the second moment matching restriction.

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