dorsal/arxiv
View SchemaThe eigenvalues and eigenvectors of finite-rank normal perturbations of large rotationally invariant non-Hermitian matrices
| Authors | Pierre Bousseyroux, Marc Potters |
|---|---|
| Categories | |
| ArXiv ID | 2601.10427vv1 |
| URL | https://arxiv.org/abs/2601.10427 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
We study finite-rank normal deformations of rotationally invariant non-Hermitian random matrices. Extending the classical Baik-Ben Arous-P\'ech\'e (BBP) framework, we characterize the emergence and fluctuations of outlier eigenvalues in models of the form $\mathbf{A} + \mathbf{T}$, where $\mathbf{A}$ is a large rotationally invariant non-Hermitian random matrix and $\mathbf{T}$ is a finite-rank normal perturbation. We also describe the corresponding eigenvector behavior. Our results provide a unified framework encompassing both Hermitian and non-Hermitian settings, thereby generalizing several known cases.
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"abstract": "We study finite-rank normal deformations of rotationally invariant non-Hermitian random matrices. Extending the classical Baik-Ben Arous-P\\\u0027ech\\\u0027e (BBP) framework, we characterize the emergence and fluctuations of outlier eigenvalues in models of the form $\\mathbf{A} + \\mathbf{T}$, where $\\mathbf{A}$ is a large rotationally invariant non-Hermitian random matrix and $\\mathbf{T}$ is a finite-rank normal perturbation. We also describe the corresponding eigenvector behavior. Our results provide a unified framework encompassing both Hermitian and non-Hermitian settings, thereby generalizing several known cases.",
"arxiv_id": "2601.10427",
"authors": [
"Pierre Bousseyroux",
"Marc Potters"
],
"categories": [
"cond-mat.dis-nn",
"math-ph",
"math.MP",
"math.PR"
],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "The eigenvalues and eigenvectors of finite-rank normal perturbations of large rotationally invariant non-Hermitian matrices",
"url": "https://arxiv.org/abs/2601.10427",
"version": "v1"
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