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Bibliographic Details
Main Author: Hattori, Kota
Format: Preprint
Published: 2024
Subjects:
Online Access:https://arxiv.org/abs/2410.15545
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Table of Contents:
  • We study the Dirichlet energy of some smooth maps appearing in a collapsing family of hyper-Kähler metrics on the $K3$ surface constructed by Foscolo. We introduce an invariant for homotopy classes of smooth maps from the $K3$ surface with a hyper-Kähler metric to a flat Riemannian orbifold of dimension $3$, then show that it gives a lower bound of the energy. Moreover, we show that the ratio of the energy to the invariant converges to $1$ for Foscolo's collapsing families.