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

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Hauptverfasser: Balasubramanyam, Baskar, Bergdall, John, Longo, Matteo
Format: Preprint
Veröffentlicht: 2020
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author Balasubramanyam, Baskar
Bergdall, John
Longo, Matteo
author_facet Balasubramanyam, Baskar
Bergdall, John
Longo, Matteo
contents Let $F$ be a totally real field and $\mathscr{E}$ the middle-degree eigenvariety for Hilbert modular forms over $F$, constructed by Bergdall--Hansen. We study the ramification locus of $\mathscr{E}$ 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 $F = \mathbb{Q}$.
format Preprint
id arxiv_https___arxiv_org_abs_2011_05237
institution arXiv
publishDate 2020
record_format arxiv
spellingShingle A $p$-adic adjoint $L$-function and the ramification locus of the Hilbert modular eigenvariety
Balasubramanyam, Baskar
Bergdall, John
Longo, Matteo
Number Theory
11F85, 11F41 (11F67, 11F33, 11G18)
Let $F$ be a totally real field and $\mathscr{E}$ the middle-degree eigenvariety for Hilbert modular forms over $F$, constructed by Bergdall--Hansen. We study the ramification locus of $\mathscr{E}$ 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 $F = \mathbb{Q}$.
title A $p$-adic adjoint $L$-function and the ramification locus of the Hilbert modular eigenvariety
topic Number Theory
11F85, 11F41 (11F67, 11F33, 11G18)
url https://arxiv.org/abs/2011.05237