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arXiv · 2608.10918

Log Calabi-Yau compactifications of $SL(2,\mathbb{C})$ character varieties

Hülya Argüz·Pierrick Bousseau
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Abstract

We prove that the $SL(2,\mathbb{C})$ character varieties of compact oriented surfaces and the generic relative $SL(2,\mathbb{C})$ character varieties of punctured surfaces admit divisorial log terminal (dlt) log Calabi-Yau compactifications. To do this, we establish a general result giving sufficient conditions for a compactification of an affine variety arising from a filtration of its algebra of regular functions to be log Calabi-Yau. We then apply this result to show that the compactifications constructed by Kutteri-Tehrani-Frohman in the compact case and by Tehrani-Frohman in the punctured case are log canonical and log Calabi-Yau.

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BibTeXRIS

Hülya Argüz, Pierrick Bousseau. 2026-08-11. Log Calabi-Yau compactifications of $SL(2,\mathbb{C})$ character varieties. https://arxiv.org/abs/2608.10918

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