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Harmonic maps from Kähler manifolds

Abstract : This report attempts a clean presentation of the theory of harmonic maps from complex and Kähler manifolds to Riemannian manifolds. After reviewing the theory of harmonic maps between Riemannian manifolds initiated by Eells-Sampson and the Bochner technique, we specialize to Kähler domains and introduce pluriharmonic maps. We prove a refined Bochner formula due to Siu and Sampson and its main consequences, such as the strong rigidity results of Siu. We also recount the applications to symmetric spaces of noncompact type and their relation to Mostow rigidity. Finally, we explain the key role of this theory for the nonabelian Hodge correspondence relating the character variety of a compact Kähler manifold and the moduli space of Higgs bundles.
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https://hal.archives-ouvertes.fr/hal-02961444
Contributor : Brice Loustau <>
Submitted on : Thursday, October 8, 2020 - 2:28:44 PM
Last modification on : Saturday, October 10, 2020 - 3:01:31 AM
Long-term archiving on: : Saturday, January 9, 2021 - 6:41:15 PM

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Brice Loustau. Harmonic maps from Kähler manifolds. 2020. ⟨hal-02961444⟩

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