关于Lehn,Lehn,Sorger和van Straten的辛八重的周期
On the period of Lehn, Lehn, Sorger, and van Straten's symplectic eightfold
摘要:
对于与不含平面的三次四重Y相关联的不可约全纯辛八重Z,我们证明了从H^4_n(Y)到H^2_n(Z)的自然Abel-Jacobi映射是Hodge等距映射.我们用Y的K3范畴A的Mukai格来描述全H^2(Z)。我们给出了Z对于K3曲面上层的模空间或对于Hilb^4(K3)是双有理的数值条件。我们提出了一个猜想,如何使用Z产生等价从A到导出范畴的K3曲面。
英文摘要:
For the irreducible holomorphic symplectic eightfold Z associated to a cubic fourfold Y not containing a plane, we show that a natural Abel-Jacobi map from H^4_prim(Y) to H^2_prim(Z) is a Hodge isometry. We describe the full H^2(Z) in terms of the Mukai lattice of the K3 category A of Y. We give numerical conditions for Z to be birational to a moduli space of sheaves on a K3 surface or to Hilb^4(K3). We propose a conjecture on how to use Z to produce equivalences from A to the derived category of a K3 surface.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。