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The remarkable universality of the eigenvalue correlation functions is perhaps one of the most salient findings in random matrix theory. Particularly for short-range separations of the eigenvalues, the correlation functions have been shown…

无序系统与神经网络 · 物理学 2025-08-28 Joseph W. Baron

This is a cursory overview of applications of concepts from random matrix theory (RMT) to quantum electronics and classical & quantum optics. The emphasis is on phenomena, predicted or explained by RMT, that have actually been observed in…

介观与纳米尺度物理 · 物理学 2011-09-06 C. W. J. Beenakker

We take on a Random Matrix theory viewpoint to study the spectrum of certain reversible Markov chains in random environment. As the number of states tends to infinity, we consider the global behavior of the spectrum, and the local behavior…

概率论 · 数学 2010-06-15 Charles Bordenave , Pietro Caputo , Djalil Chafai

We propose a theoretical framework to study the eigenvalue spectra of the controllability Gramian of systems with random state matrices, such as networked systems with a random graph structure. Using random matrix theory, we provide…

系统与控制 · 计算机科学 2016-09-16 Victor M. Preciado , M. Amin Rahimian

A Gaussian process (GP) is a powerful and widely used regression technique. The main building block of a GP regression is the covariance kernel, which characterizes the relationship between pairs in the random field. The optimization to…

数值分析 · 数学 2022-01-05 Vahid Keshavarzzadeh , Shandian Zhe , Robert M. Kirby , Akil Narayan

We present a novel k-way high-dimensional graphical model called the Generalized Root Model (GRM) that explicitly models dependencies between variable sets of size k > 2---where k = 2 is the standard pairwise graphical model. This model is…

机器学习 · 统计学 2016-06-03 David I. Inouye , Pradeep Ravikumar , Inderjit S. Dhillon

Random Hermitian matrices are used to model complex systems without time-reversal invariance. Adding an external source to the model can have the effect of shifting some of the matrix eigenvalues, which corresponds to shifting some of the…

数学物理 · 物理学 2015-05-20 Marco Bertola , Robert Buckingham , Seung-Yeop Lee , Virgil U. Pierce

We prove an inequality on decision trees on monotonic measures which generalizes the OSSS inequality on product spaces. As an application, we use this inequality to prove a number of new results on lattice spin models and their…

概率论 · 数学 2018-12-27 Hugo Duminil-Copin , Aran Raoufi , Vincent Tassion

We study the distribution of entries of a random permutation matrix under a "randomized basis," i.e., we conjugate the random permutation matrix by an independent random orthogonal matrix drawn from Haar measure. It is shown that under…

概率论 · 数学 2019-05-08 Benjamin Tsou

Using random matrix techniques and the theory of Matrix Product States we show that reduced density matrices of quantum spin chains have generically maximum entropy.

量子物理 · 物理学 2019-02-27 Benoit Collins , Carlos E. Gonzalez-Guillen , David Perez-Garcia

Parker and L\^e introduced random butterfly transforms (RBTs) as a preprocessing technique to replace pivoting in dense LU factorization. Unfortunately, their FFT-like recursive structure restricts the dimensions of the matrix. Furthermore,…

数值分析 · 数学 2024-10-14 Neil Lindquist , Piotr Luszczek , Jack Dongarra

We develop a method for the random sampling of (multimode) Gaussian states in terms of their covariance matrix, which we refer to as a random quantum covariance matrix (RQCM). We analyze the distribution of marginals and demonstrate that…

量子物理 · 物理学 2024-08-19 Leevi Leppäjärvi , Ion Nechita , Ritabrata Sengupta

We study universal traits which emerge both in real-world complex datasets, as well as in artificially generated ones. Our approach is to analogize data to a physical system and employ tools from statistical physics and Random Matrix Theory…

机器学习 · 计算机科学 2024-04-08 Noam Levi , Yaron Oz

We consider quantum graphs with spin-orbit couplings at the vertices. Time-reversal invariance implies that the bond S-matrix is in the orthogonal or symplectic symmetry class, depending on spin quantum number s being integer or…

混沌动力学 · 物理学 2010-12-06 Jens Bolte , Jonathan Harrison

In classical systems, our recent theoretical study provides new insight into how spatial constraint on the system connects with macroscopic properties, which lead to universal representation of equilibrium macroscopic physical property and…

无序系统与神经网络 · 物理学 2016-11-10 Koretaka Yuge , Kazuhito Takeuchi , Tetuya Kishimoto

The Internet is a complex network of interconnected routers and the existence of collective behavior such as congestion suggests that the correlations between different connections play a crucial role. It is thus critical to measure and…

无序系统与神经网络 · 物理学 2009-11-07 Marc Barthelemy , Bernard Gondran , Eric Guichard

We derive the Eigenstate Thermalization Hypothesis (ETH) from a random matrix Hamiltonian by extending the model introduced by J. M. Deutsch [Phys. Rev. A 43, 2046 (1991)]. We approximate the coupling between a subsystem and a many-body…

统计力学 · 物理学 2018-09-26 Charlie Nation , Diego Porras

This article carries out a large dimensional analysis of standard regularized discriminant analysis classifiers designed on the assumption that data arise from a Gaussian mixture model with different means and covariances. The analysis…

Spontaneous breaking of chiral symmetry in QCD has traditionally been inferred indirectly through low-energy theorems and comparison with experiments. Thanks to the understanding of an unexpected connection between chiral Random Matrix…

高能物理 - 唯象学 · 物理学 2015-05-27 P. H. Damgaard

The application of random-matrix theory (RMT) to compound-nucleus (CN) reactions is reviewed. An introduction into the basic concepts of nuclear scattering theory is followed by a survey of phenomenological approaches to CN scattering. The…

核理论 · 物理学 2015-05-18 G. E. Mitchell , A. Richter , H. A. Weidenmueller