Uniform spectral gap conjecture for random covers of Anosov surfaces

From papers

Let MM) be a closed Anosov surface, and let MnMM_n\to M be a uniformly random cover. Write γ0\gamma_0 for the constant in the essential spectral-gap theorem and call a resonance of MnM_n new if it does not arise from the base surface MM.

Uniform spectral gap conjecture. For any ε>0\varepsilon>0, with probability tending to 11 as n+n\to +\infty, the cover MnMM_n\to M has no new resonance in the half-space

{z:Re(z)>γ02+ε}.\{z: \operatorname{Re}(z)>-\frac{\gamma_0}{2}+\varepsilon\}.

The conjecture would give a high-frequency localization result uniform over random covers, beyond the finiteness supplied by the essential spectral gap theorem. The source does not state a resolution.

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Sources & referencesView supporting material

Primary source

Julien Moy, “Spectral gap for Pollicott-Ruelle resonances on random coverings of Anosov surfaces”, arXiv:2602.03726 (2026).

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