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Deformation theory of periodic Higgs-de Rham flows

Algebraic Geometry 2020-05-05 v1

Abstract

In this note we study the deformation theory of periodic (logarithmic) Higgs-de Rham flows. Under suitable numerical assumptions, this is equivalent to the deformation theory of torsion (logarithmic) Fontaine-Faltings modules. As an application, we formulate an \emph{ordinarity} condition, which provides a sufficient condition for a pnp^n-torsion crystalline representation to deform to a pn+1p^{n+1}-torsion crystalline representation.

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Cite

@article{arxiv.2005.00579,
  title  = {Deformation theory of periodic Higgs-de Rham flows},
  author = {Raju Krishnamoorthy and Jinbang Yang and Kang Zuo},
  journal= {arXiv preprint arXiv:2005.00579},
  year   = {2020}
}

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32 pages