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MiS Preprint
73/2006

Chow-Künneth decomposition for universal families over Picard modular surfaces

Andrea Miller, Stefan Müller-Stach, Sigrid Wortmann, Yi-Hu Yang and Kang Zuo

Abstract

We prove existence results for Chow--Künneth projectors on compactified universal families of Abelian threefolds with complex multiplication over a particular Picard modular surface studied by Holzapfel. Our method builds up on the approach of Gordon, Hanamura and Murre in the case of Hilbert modular varieties. In addition we use relatively complete models in the sense of Mumford, Faltings and Chai and prove vanishing results for $L^2$--Higgs cohomology groups of certain arithmetic subgroups in $SU(2,1)$ which are not cocompact.

Received:
Aug 14, 2006
Published:
Aug 14, 2006

Related publications

inBook
2007 Repository Open Access
Andrea Miller, Stefan Müller-Stach, Sigrid Wortman, Yi-Hu Yang and Kang Zuo

Chow-Künneth decomposition for universal families over Picard modular surfaces

In: Algebraic cycles and motives : proceedings of the EAGER conference held in Leiden, August 30 - September 4, 2004. Vol. 2 / Jan Nagel... (eds.)
Cambridge : Cambridge University Press, 2007. - pp. 241-276
(London Mathematical Society lecture note series ; 344)