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Stability of mesoscopic fluctuations of orthogonal polynomial ensembles under sparse decaying perturbations

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Abstract

In this paper, we study the stability of the mesoscopic fluctuations of certain orthogonal polynomial ensembles on the real line utilizing the recurrence relation of the associated orthogonal polynomials. We prove that under a sparse enough decaying perturbation of the recurrence coefficients the limiting distribution is stable. As a corollary, we prove a mesoscopic central limit theorem (at any scale) for a family of singular continuous measures on [−2, 2].

Original languageEnglish
Article number2550022
JournalRandom Matrices: Theory and Application
Volume15
Issue number1
DOIs
StatePublished - 1 Jan 2026

Bibliographical note

Publisher Copyright:
© 2026 World Scientific Publishing Company.

Keywords

  • Random matrix theory
  • determinantal point process
  • mesoscopic fluctuations
  • orthogonal polynomial ensembles
  • orthogonal polynomials
  • perturbations

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