Spectral gap with polynomial rate for random covering surfaces
Spectral gap with polynomial rate for random covering surfaces
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 $X$ be a closed hyperbolic surface. We show there exists $b,c>0$ such that a uniformly random degree-$n$ cover $X_{n}$ of $X$ has no new Laplacian eigenvalues below $\frac{1}{4}-cn^{-b}$ with probability tending to $1$ as $n\to\infty$.
Will Hide、Davide Macera、Joe Thomas
数学
Will Hide,Davide Macera,Joe Thomas.Spectral gap with polynomial rate for random covering surfaces[EB/OL].(2025-05-13)[2025-07-25].https://arxiv.org/abs/2505.08479.点此复制
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