Rigidity for Families of Polarized Calabi-Yau Varieties
Yi Zhang
Abstract
In this paper, we study the analogue of the Shafarevich conjecture for polarized Calabi-Yau varieties. We use variations of Hodge structures and Higgs bundles to establish a criterion for the rigidity of families. We then apply the criterion to obtain that some important and typical families of Calabi-Yau varieties are rigid, for examples., Lefschetz pencils of Calabi-Yau varieties, strongly degenerated families (not only for families of Calabi-Yau varieties), families of Calabi-Yau varieties admitting a degeneration with maximal unipotent monodromy.
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