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arXiv · 2410.14130

The uniqueness of Poincar\'e type constant scalar curvature K\"ahler metric

Yulun Xu·Kai Zheng
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Abstract

Let $D$ be a smooth divisor on a closed K\"ahler manifold $X$. First, we prove that Poincar\'e type constant scalar curvature K\"ahler (cscK) metric with a singularity at $D$ is unique up to a holomorphic transformation on $X$ that preserves $D$, if there are no nontrivial holomorphic vector fields on $D$. For the general case, we propose a conjecture relating the uniqueness of Poincar\'e type cscK metric to its asymptotic behavior near $D$. We give an affirmative answer to this conjecture for those Poincar\'e type cscK metrics whose asymptotic behavior is invariant under any holomorphic transformation of $X$ that preserve $D$. We also show that this conjecture can be reduced to a fixed point problem.

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Yulun Xu, Kai Zheng. 2024-10-18. The uniqueness of Poincar\'e type constant scalar curvature K\"ahler metric. https://arxiv.org/abs/2410.14130

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