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Vanishing theorem for tame harmonic bundles via L2-cohomology

Published online by Cambridge University Press:  03 April 2025

Ya Deng
Affiliation:
CNRS, Institut Élie Cartan de Lorraine, Université de Lorraine, Site de Nancy, 54506 Vandœuvre-lès-Nancy, France ya.deng@math.cnrs.fr
Feng Hao
Affiliation:
School of Mathematics, Shandong University, 27 Shanda South Road, Jinan 250100, PR China feng.hao@sdu.edu.cn

Abstract

Using $L^2$-methods, we prove a vanishing theorem for tame harmonic bundles over quasi-compact Kähler manifolds in a very general setting. As a special case, we give a completely new proof of the Kodaira-type vanishing theorems for Higgs bundles due to Arapura. To prove our vanishing theorem, we construct a fine resolution of the Dolbeault complex for tame harmonic bundles via the complex of sheaves of $L^2$-forms, and we establish the Hörmander $L^2$-estimate and solve $(\bar {\partial }_E+\theta )$-equations for Higgs bundles $(E,\theta )$.

Information

Type
Research Article
Copyright
© The Author(s), 2025. The publishing rights in this article are licensed to Foundation Compositio Mathematica under an exclusive licence

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