Length spectrum of large genus random metric maps

S. Barazer, M. Liu Forum Math. Sigma 13 2025 arXiv DOI

We study the length of short cycles on uniformly random metric maps (also known as ribbon graphs) of large genus using a Teichmüller theory approach. We establish that, as the genus tends to infinity, the length spectrum converges to a Poisson point process with intensity \[\lambda(\ell) = \frac{\cosh(\ell) - 1}{\ell}.\] This result extends the work of Janson and Louf to the multi-faced case.