A Hodge-Tate decomposition with rigid analytic coefficients
Abstract
Let be a smooth proper rigid analytic space over a complete algebraically closed field extension of . We establish a Hodge--Tate decomposition for with -coefficients, where is any commutative locally -divisible rigid group. This generalizes the Hodge--Tate decomposition of Faltings and Scholze, which is the case . For this, we introduce geometric analogs of the Hodge--Tate spectral sequence with general locally -divisible coefficients. We prove that these spectral sequences degenerate at . Our results apply more generally to a class of smooth families of commutative adic groups over and in the relative setting of smooth proper morphisms of smooth rigid spaces. We deduce applications to analytic Brauer groups and the geometric -adic Simpson correspondence.
Cite
@article{arxiv.2411.07366,
title = {A Hodge-Tate decomposition with rigid analytic coefficients},
author = {Lucas Gerth},
journal= {arXiv preprint arXiv:2411.07366},
year = {2026}
}
Comments
v2: accepted version, added a subsection on rigid approximation (3.2) and improved the main result (Thm. 1.6), 40 pages, the numbering changed throughout