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Determinants of Laplacians on random hyperbolic surfaces

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Abstract

For sequences (Xj) of random closed hyperbolic surfaces with volume Vol(Xj) tending to infinity, we prove that there exists a universal constant E > 0 such that for all ϵ > 0, the regularized determinant of the Laplacian satisfies

$${{\log \det ({\Delta _{{X_j}}})} \over {{\rm{Vol}}({X_j})}} \in [E -\epsilon ,E +\epsilon]$$

with high probability as j → +⋡. This result holds for various models of random surfaces, including the Weil–Petersson model.

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Acknowledgement

It is a pleasure to thank my neighbor Bram Petri for several discussions around this work. Thanks to Yuhao Xue and an anonymous referee for pointing out an improvement of Theorem 3.1. I also thank ZeevRudnick for his reading and comments. Finally, Yunhui Wu and Yuxin He have recently shown to me that Theorem 5.1 can also be refined in the Weil–Petterson case; see in §5 for details.

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Correspondence to Frédéric Naud.

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Dedicated to Peter Sarnak on the occasion of his 70th birthday

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Naud, F. Determinants of Laplacians on random hyperbolic surfaces. JAMA 151, 265–291 (2023). https://doi.org/10.1007/s11854-023-0334-8

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  • DOI: https://doi.org/10.1007/s11854-023-0334-8

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