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We consider the empirical eigenvalue distribution of an $m\times m$ principal submatrix of an $n\times n$ random unitary matrix distributed according to Haar measure. For $n$ and $m$ large with $\frac{m}{n}=\alpha$, the empirical spectral…

概率论 · 数学 2019-05-08 Elizabeth Meckes , Kathryn Stewart

For a square matrix, the range of its Rayleigh quotients is known as the numerical range, which is a compact and convex set by the Toeplitz-Hausdorff theorem. The largest value and the smallest boundary value (in magnitude) of this convex…

概率论 · 数学 2025-10-06 Zhigang Bao , Giorgio Cipolloni

The density of complex eigenvalues of random asymmetric $N\times N$ matrices is found in the large-$N$ limit. The matrices are of the form $H_0+A$ where $A$ is a matrix of $N^2$ independent, identically distributed random variables with…

凝聚态物理 · 物理学 2009-10-28 Boris A Khoruzhenko

We consider $n\times n$ real symmetric and hermitian random matrices $H_{n,m}$ equals the sum of a non-random matrix $H_{n}^{(0)}$ matrix and the sum of $m$ rank-one matrices determined by $m$ i.i.d. isotropic random vectors with…

概率论 · 数学 2007-10-09 Alain Pajor , Leonid Pastur

For an $n\times n$ Laplacian random matrix $L$ with Gaussian entries it is proven that the fluctuations of the largest eigenvalue and the largest diagonal entry of $L/\sqrt{n-1}$ are Gumbel. We first establish suitable non-asymptotic…

概率论 · 数学 2021-01-22 Santiago Arenas-Velilla , Victor Pérez-Abreu

We consider large non-Hermitian real or complex random matrices $X$ with independent, identically distributed centred entries. We prove that their local eigenvalue statistics near the spectral edge, the unit circle, coincide with those of…

概率论 · 数学 2023-01-11 Giorgio Cipolloni , László Erdős , Dominik Schröder

An elliptic random matrix $X$ is a square matrix whose $(i,j)$-entry $X_{ij}$ is independent of the rest of the entries except possibly $X_{ji}$. Elliptic random matrices generalize Wigner matrices and non-Hermitian random matrices with…

概率论 · 数学 2022-02-03 Andrew Campbell , Sean O'Rourke

This is the second part of a study of the limiting distributions of the top eigenvalues of a Hermitian matrix model with spiked external source under a general external potential. The case when the external source is of rank one was…

数学物理 · 物理学 2012-05-30 Jinho Baik , Dong Wang

We study the real algebraic variety of real symmetric matrices with eigenvalue multiplicities determined by a partition. We present formulas for the dimension and Euclidean distance degree. We give a parametrization by rational functions.…

代数几何 · 数学 2021-10-13 Madeleine Weinstein

In this paper, we characterize the convergence of the (rescaled logarithmic) empirical spectral distribution of wavelet random matrices. We assume a moderately high-dimensional framework where the sample size $n$, the dimension $p(n)$ and,…

概率论 · 数学 2024-01-08 Patrice Abry , Gustavo Didier , Oliver Orejola , Herwig Wendt

Improving upon results of Rudelson and Vershynin, we establish delocalization bounds for eigenvectors of independent-entry random matrices. In particular, we show that with high probability every eigenvector is delocalized, meaning any…

概率论 · 数学 2019-02-01 Kyle Luh , Sean O'Rourke

We consider $N\times N$ Hermitian random matrices with independent identical distributed entries. The matrix is normalized so that the average spacing between consecutive eigenvalues is of order 1/N. Under suitable assumptions on the…

数学物理 · 物理学 2009-11-13 Laszlo Erdos , Benjamin Schlein , Horng-Tzer Yau

We consider a random symmetric matrix ${\bf X} = [X_{jk}]_{j,k=1}^n$ in which the upper triangular entries are independent identically distributed random variables with mean zero and unit variance. We additionally suppose that $\mathbb E…

概率论 · 数学 2016-12-01 Friedrich Götze , Alexey Naumov , Alexander Tikhomirov

Consider the random matrix $\Sigma = D^{1/2} X \widetilde D^{1/2}$ where $D$ and $\widetilde D$ are deterministic Hermitian nonnegative matrices with respective dimensions $N \times N$ and $n \times n$, and where $X$ is a random matrix with…

概率论 · 数学 2015-02-05 Romain Couillet , Walid Hachem

We establish the limiting spectral distribution of Kendall's correlation matrices in the moderate high-dimensional regime where the dimension grows slower than the sample size. Our framework allows observations to be independent but not…

统计理论 · 数学 2026-03-10 Raunak Shevade , Monika Bhattacharjee

Complex extension of quantum mechanics and the discovery of pseudo-unitarily invariant random matrix theory has set the stage for a number of applications of these concepts in physics. We briefly review the basic ideas and present…

量子物理 · 物理学 2013-02-13 Shashi. C. L. Srivastava , S. R. Jain

We consider two $n\times n$ non-Hermitian random matrices such that the $ij$th entry of one matrix is correlated with the $ij$th entry of the other matrix. However, the entries of any particular matrix are i.i.d. random variables. We study…

概率论 · 数学 2025-04-08 Indrajit Jana , Sunita Rani

Spectral properties of Hermitian Toeplitz, Hankel, and Toeplitz-plus-Hankel random matrices with independent identically distributed entries are investigated. Combining numerical and analytic arguments it is demonstrated that spectral…

数学物理 · 物理学 2021-04-28 Eugene Bogomolny , Olivier Giraud

The distribution of eigenvalues of N times N random matrices in the limit N to infinity is the solution to a variational principle that determines the ground state energy of a confined fluid of classical unit charges. This fact is a…

数学物理 · 物理学 2009-10-31 Michael K. -H. Kiessling , Herbert Spohn

We study the asymptotic distributions of the spiked eigenvalues and the largest nonspiked eigenvalue of the sample covariance matrix under a general covariance matrix model with divergent spiked eigenvalues, while the other eigenvalues are…

统计理论 · 数学 2017-11-07 Tony Cai , Xiao Han , Guangming Pan