# Collapsing of the line bundle mean curvature flow on Kähler surfaces

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## 抄録

We study the line bundle mean curvature flow on Kähler surfaces under the hypercritical phase and a certain semipositivity condition. We naturally encounter such a condition when considering the blowup of Kähler surfaces. We show that the flow converges smoothly to a singular solution to the deformed Hermitian–Yang–Mills equation away from a finite number of curves of negative self-intersection on the surface. As an application, we obtain a lower bound of a Kempf–Ness type functional on the space of potential functions satisfying the hypercritical phase condition.

本文言語 英語 27 Calculus of Variations and Partial Differential Equations 60 1 https://doi.org/10.1007/s00526-020-01908-0 出版済み - 2 2021

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