Results 51 to 60 of about 8,171,715 (369)

Circular Rosenzweig-Porter random matrix ensemble

open access: yesSciPost Physics, 2022
The Rosenzweig-Porter random matrix ensemble serves as a qualitative phenomenological model for the level statistics and fractality of eigenstates across the many-body localization transition in static systems. We propose a unitary (circular) analogue of
Wouter Buijsman, Yevgeny Bar Lev
doaj   +1 more source

A Random Matrix Perspective on Random Tensors

open access: yes, 2021
Tensor models play an increasingly prominent role in many fields, notably in machine learning. In several applications, such as community detection, topic modeling and Gaussian mixture learning, one must estimate a low-rank signal from a noisy tensor.
Goulart, José Henrique de M   +2 more
openaire   +3 more sources

Stability of Random Matrix Models [PDF]

open access: yesRocky Mountain Journal of Mathematics, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Schreiber, Micheline A.   +1 more
openaire   +3 more sources

A Random Matrix Approach to Neural Networks [PDF]

open access: yesarXiv.org, 2017
This article studies the Gram random matrix model $G=\frac1T\Sigma^{\rm T}\Sigma$, $\Sigma=\sigma(WX)$, classically found in the analysis of random feature maps and random neural networks, where $X=[x_1,\ldots,x_T]\in{\mathbb R}^{p\times T}$ is a (data ...
Cosme Louart   +2 more
semanticscholar   +1 more source

A random matrix theory of decoherence [PDF]

open access: yesNew Journal of Physics, 2008
Random matrix theory is used to represent generic loss of coherence of a fixed central system coupled to a quantum-chaotic environment, represented by a random matrix ensemble, via random interactions. We study the average density matrix arising from the ensemble induced, in contrast to previous studies where the average values of purity, concurrence ...
Carlos Pineda   +4 more
openaire   +3 more sources

Eigenstate Thermalization, Random Matrix Theory, and Behemoths. [PDF]

open access: yesPhysical Review Letters, 2018
The eigenstate thermalization hypothesis (ETH) is one of the cornerstones of contemporary quantum statistical mechanics. The extent to which ETH holds for nonlocal operators is an open question that we partially address in this Letter.
Ivan M Khaymovich, M. Haque, P. McClarty
semanticscholar   +1 more source

The Characteristic Polynomial of a Random Matrix

open access: yesCombinatorica, 2022
Form an $n \times n$ matrix by drawing entries independently from $\{\pm1\}$ (or another fixed nontrivial finitely supported distribution in $\mathbf{Z}$) and let $ $ be the characteristic polynomial. Conditionally on the extended Riemann hypothesis, with high probability $ $ is irreducible and $\mathrm{Gal}( ) \geq A_n$.
openaire   +2 more sources

Non-hermitian random matrix models [PDF]

open access: yesNuclear Physics B, 1997
49 pages RevTex, with modified feynmf sty, 9 EPSF figures included.
Maciej A. Nowak   +3 more
openaire   +4 more sources

Many-Body Quantum Chaos: Analytic Connection to Random Matrix Theory [PDF]

open access: yesPhysical Review X, 2017
A new theory explains observed connections between the thermal phase in many-body quantum systems and random matrix theory, paving the way to a deeper understanding of this phase.
Pavel Kos, Marko Ljubotina, T. Prosen
semanticscholar   +1 more source

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