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arXiv · 2311.16617

Local model theory for non-generic tame potentially Barsotti--Tate deformation rings

Bao Viet Le Hung·Ariane Mézard·Stefano Morra
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Abstract

We develop a local model theory for moduli stacks of $2$-dimensional non-scalar tame potentially Barsotti--Tate Galois representations of the Galois group of an unramified extension of $\mathbb{Q}_p$. We derive from this explicit presentations of potentially Barsotti--Tate deformation rings, allowing us to prove structural results about them, and prove various conjectures formulated by Caruso--David--M\'ezard.

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Bao Viet Le Hung, Ariane Mézard, Stefano Morra. 2023-11-28. Local model theory for non-generic tame potentially Barsotti--Tate deformation rings. https://arxiv.org/abs/2311.16617

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