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arXiv 1101.0874math.AGmath.KTmath.NT
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非阿基米德域上K3曲面的运动积分

Motivic integral of K3 surfaces over a non-archimedean field

Allen J. Stewart, Vadim Vologodsky

摘要:

本文证明了一个表示$\bC((t))$上K3曲面的运动积分(\cite{ls})的公式,该公式具有相应的极限Hodge结构的半稳定约化.其次,对于非阿基米德域上的光滑簇,我们定义了Grothendieck在阿贝尔簇的情况下构造的monodromy配对的一个类似物,并证明了我们的monodromy配对是该簇的一个双有理不变量.最后,我们给出了任意非阿基米德域上极大退化K3曲面的运动积分的一个公式,并证明了Kummer K3曲面的运动积分猜想。

英文摘要:

We prove a formula expressing the motivic integral (\cite{ls}) of a K3 surface over $\bC((t))$ with semi-stable reduction in terms of the associated limit Hodge structure. Secondly, for every smooth variety over a non-archimedean field we define an analogue of the monodromy pairing, constructed by Grothendieck in the case of Abelian varieties, and prove that our monodromy pairing is a birational invariant of the variety. Finally, we propose a conjectural formula for the motivic integral of maximally degenerated K3 surfaces over an arbitrary non-archimedean field and prove this conjecture for Kummer K3 surfaces.

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