A $p$-adic adjoint $L$-function and the ramification locus of the Hilbert modular eigenvariety

Abstract

Let $F$ be a totally real field and $\mathcal{E}$ the middle-degree eigenvariety for Hilbert modular forms over $F$, constructed by Bergdall--Hansen. We study the ramification locus of $\mathcal{E}$ in relation to the $p$-adic properties of adjoint $L$-values. The connection between the two is made via an analytic twisted Poincaré pairing over affinoid weights, which interpolates the classical twisted Poincaré pairing for Hilbert modular forms, itself known to be related to adjoint $L$-values by works of Ghate and Dimitrov. The overall strategy connecting the pairings to ramification is based on the theory of $L$-ideals, which was used by Bellaïche and Kim in the case where $F=\mathbb{Q}$.

52 pages. Minor revisions following referee suggestions. Final version

References in corpus (5)

• Hilbert modular forms and p-adic Hodge theory
• Automorphic period and the central value of Rankin--Selberg L-function
• A local model for the trianguline variety and applications
• Ordinary Modular Forms and Companion Points on the Eigencurve
• The Jacquet-Langlands correspondence for overconvergent Hilbert modular forms

Cited by in corpus (1)

• A canonical generator for congruence ideals of Hida families