Spectral halo conjecture for Hilbert modular eigenvarieties
Let index the relevant embeddings, let be the boundary region of the eigenvariety, let be the corresponding weight-space region, let be the weight map, and let and denote the quantities associated to the -th component as in the construction. When is sufficiently close to , there should exist, for every , a sequence of rational numbers
Writing , the eigenvariety should be a disjoint union
of possibly empty rigid analytic spaces finite over via , such that for every and each closed point ,
for all . Moreover, each sequence should be a disjoint union of finitely many arithmetic progressions, counted with multiplicities. This conjecture predicts a precise spectral-halo decomposition and valuation pattern near the boundary of the Hilbert modular eigenvariety, extending the Coleman–Mazur–Buzzard–Kilford picture; the supplied text gives no resolution status.
References
Primary source
Rufei Ren and Bin Zhao, “Spectral halo for Hilbert modular forms”, arXiv:2005.14267 (2021).
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