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Bibliographic Details
Main Authors: Cao, Junyan, Deng, Ya, Hacon, Christopher D., Paun, Mihai
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2603.14539
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Table of Contents:
  • Let $X$ be a smooth complex quasi-projective variety that is special in the sense of Campana. We prove that the monodromy group of any complex local system on $X$ is virtually nilpotent of class at most $2$. This result sharply refines a theorem of Cadorel, Yamanoi, and the second author. To establish this result, we develop a deformation theory for certain local systems on quasi-compact Kähler manifolds by constructing universal deformations for such local systems. As a byproduct of our argument, we also show that a general fiber of the quasi-Albanese map of $X$ is special, extending a result of Campana and Claudon from the projective to the quasi-projective setting.