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On the spectral edge of non-Hermitian random matrices

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arxiv 2404.17512 v4 pith:2R3QPIV7 submitted 2024-04-26 math.PR

classification math.PR
keywords matricesdeterministicedgeeigenvaluesnaturalnon-hermitianrandomspectrum
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abstract

For general non-Hermitian random matrices $X$ and deterministic deformation matrices $A$, we prove that the local eigenvalue statistics of $A+X$ close to the typical edge points of its spectrum are universal. Furthermore, we show that under natural assumptions on $A$ the spectrum of $A+X$ does not have outliers at a distance larger than the natural fluctuation scale of the eigenvalues. As a consequence, the number of eigenvalues in each component of $\mathrm{Spec}(A+X)$ is deterministic.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The Zigzag Strategy for Random Band Matrices

    math.PR 2025-06 accept novelty 8.0 of 10

    For random band matrices with width W >> sqrt(N), the paper proves complete delocalization, Wigner-Dyson statistics, and quantum unique ergodicity for general distributions and variance profiles.

  2. Spectral radius concentration for inhomogeneous random matrices with independent entries

    math.PR 2025-01 conditional novelty 7.0 of 10

    For inhomogeneous random matrices, the spectral radius is bounded by the variance row/column sums up to the optimal sparsity (log n)^{-1/2}.

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