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arXiv 1302.4532math.PRmath-phmath.MP
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具有随机势的Wigner矩阵的局部变形周期律和完全离域

Local deformed semicircle law and complete delocalization for Wigner matrices with random potential

Ji Oon Lee, Kevin Schnelli

摘要:

我们考虑$H = W + λV$形式的厄米特随机矩阵,其中$W$是Wigner矩阵,$V$是独立于$W$的对角随机矩阵.我们假设$W$的矩阵项的次指数衰减,并且我们选择$λ\sim 1$,使得$W$和$λV$的本征值在光谱的大部分中具有相同的阶数。本文证明了对于一大类对角矩阵$V$,局部变形周期律对$H$成立,这与Wigner矩阵的局部变形周期律类似.我们还证明了特征向量的完全离域性和其他关于特征值位置的结果。

英文摘要:

We consider Hermitian random matrices of the form $H = W + λV$, where $W$ is a Wigner matrix and $V$ a diagonal random matrix independent of $W$. We assume subexponential decay for the matrix entries of $W$ and we choose $λ\sim 1$ so that the eigenvalues of $W$ and $λV$ are of the same order in the bulk of the spectrum. In this paper, we prove for a large class of diagonal matrices $V$ that the local deformed semicircle law holds for $H$, which is an analogous result to the local semicircle law for Wigner matrices. We also prove complete delocalization of eigenvectors and other results about the positions of eigenvalues.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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