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Model Higgs bundles in exceptional components of the $\text{Sp(4}\text{,}\mathbb{R}\text{)}$-character variety

Abstract : We establish a gluing construction for Higgs bundles over a connected sum of Riemann surfaces in terms of solutions to the $\text{Sp(4}\text{,}\mathbb{R}\text{)}$-Hitchin equations using the linearization of a relevant elliptic operator. The construction can be used to provide model Higgs bundles in all the $2g-3$ exceptional components of the maximal $\text{Sp(4}\text{,}\mathbb{R}\text{)}$-Higgs bundle moduli space, which correspond to components solely consisted of Zariski dense representations. This also allows a comparison between the invariants for maximal Higgs bundles and the topological invariants for Anosov representations constructed by O. Guichard and A. Wienhard.
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Preprints, Working Papers, ...
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https://hal.archives-ouvertes.fr/hal-02467445
Contributor : Georgios Kydonakis <>
Submitted on : Monday, May 31, 2021 - 12:18:54 PM
Last modification on : Saturday, June 5, 2021 - 3:34:15 AM

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Georgios Kydonakis. Model Higgs bundles in exceptional components of the $\text{Sp(4}\text{,}\mathbb{R}\text{)}$-character variety. 2021. ⟨hal-02467445v2⟩

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