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arXiv · 1605.05267

Deformation theory of scalar-flat K\"ahler ALE surfaces

Jiyuan Han·Jeff A. Viaclovsky
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Abstract

We prove a Kuranishi-type theorem for deformations of complex structures on ALE K\"ahler surfaces. This is used to prove that for any scalar-flat K\"ahler ALE surface, all small deformations of complex structure also admit scalar-flat K\"ahler ALE metrics. A local moduli space of scalar-flat K\"ahler ALE metrics is then constructed, which is shown to be universal up to small diffeomorphisms (that is, diffeomorphisms which are close to the identity in a suitable sense). A formula for the dimension of the local moduli space is proved in the case of a scalar-flat K\"ahler ALE surface which deforms to a minimal resolution of $\mathbb{C}^2/\Gamma$, where $\Gamma$ is a finite subgroup of ${\rm{U}}(2)$ without complex reflections.

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Jiyuan Han, Jeff A. Viaclovsky. 2016-05-17. Deformation theory of scalar-flat K\"ahler ALE surfaces. https://arxiv.org/abs/1605.05267

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