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P-adic Simpson correpondence via prismatic crystals (2201.08030v4)

Published 20 Jan 2022 in math.AG

Abstract: Let $\frakX$ be a smooth $p$-adic formal scheme over $\calO_K$ with adic generic fiber $X$. We obtain a global equivalence between the category $\Vect((\frakX){\Prism},\overline\calO{\Prism}[\frac{1}{p}])$ of rational Hodge--Tate crystals on the absolute prismatic site $(\frakX){\Prism}$ and the category $\HIG{\nil}(X)$ of enhanced Higgs bundles on $X$. Along the way, we construct an inverse Simpson functor from $\HIG{\nil}_(X)$ to the category $\Vect(X_{\proet},\widehat\calO_X)$ of generalised representations on $X$, which turns out to be fully faithful.

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