Abstract
We study the convergence of volume forms on a degenerating holomorphic family of log Calabi–Yau varieties to a non-Archimedean measure, extending a result of Boucksom and Jonsson. More precisely, let (X, B) be a holomorphic family of sub log canonical, log Calabi–Yau complex varieties parameterized by the punctured unit disk. Let \(\eta \) be a meromorphic form on X with poles along B such that the restriction of \(\eta \) is a top-dimensional form on each of the fibers. We show that the (possibly infinite) measures induced by the restriction of \(|\eta \wedge \overline{\eta }|\) to a fiber converge to a measure on the Berkovich analytification of \(X \setminus B\) as we approach the puncture. The convergence takes place on a hybrid space, which is obtained by filling in the space \(X \setminus B\) with the aforementioned Berkovich space over the puncture.
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Acknowledgements
I thank my advisor, Mattias Jonsson, for suggesting this problem, and also for his support and guidance. I also thank the anonymous referee for their comments and suggestions. This work was supported by the NSF grants DMS-1600011 and DMS-1900025.
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Shivaprasad, S. Convergence of volume forms on a family of log Calabi–Yau varieties to a non-Archimedean measure. Math. Z. 301, 3849–3875 (2022). https://doi.org/10.1007/s00209-022-03032-5
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DOI: https://doi.org/10.1007/s00209-022-03032-5