English

Spectral gap with polynomial rate for random covering surfaces

Spectral Theory 2025-05-14 v1 Differential Geometry Operator Algebras Probability

Abstract

In this note we show that the recent work of Magee, Puder and van Handel [MPvH25] can be applied to obtain an optimal spectral gap result with polynomial error rate for uniformly random covers of closed hyperbolic surfaces. Let XX be a closed hyperbolic surface. We show there exists b,c>0b,c>0 such that a uniformly random degree-nn cover XnX_{n} of XX has no new Laplacian eigenvalues below 14cnb\frac{1}{4}-cn^{-b} with probability tending to 11 as nn\to\infty.

Keywords

Cite

@article{arxiv.2505.08479,
  title  = {Spectral gap with polynomial rate for random covering surfaces},
  author = {Will Hide and Davide Macera and Joe Thomas},
  journal= {arXiv preprint arXiv:2505.08479},
  year   = {2025}
}
R2 v1 2026-06-28T23:31:15.595Z