Twisted Sectors in Quasi-Homogeneous Polynomial Singularities and Automorphic Forms
发布时间：2022年10月29日
浏览次数：2387
发布者: Wenqiong Li
主讲人： 周杰（清华大学）
活动时间： 从 2022-11-08 14:00 到 15:00
场地： 北京国际数学研究中心，全斋全29教室
Twisted sectors in singularity theories appear in both Fan-Jarvis-Ruan-Witten theory (Landau-Ginzburg A-model) and Hodge theory (Landau-Ginzburg B-model). In this talk, I will approach them using the language of mixed Hodge structures on the vanishing cohomology. For one-parameter deformations of Calabi-Yau type Fermat polynomial singularities along degree-one directions, we show that twisted sectors in the vanishing cohomology are automorphic forms for certain triangular groups, using the Riemann-Hilbert correspondence. We prove consequently that genus zero Gromov-Witten generating series of the corresponding Fermat Calabi-Yau varieties are components of automorphic forms. If time permits, I will also explain some properties of the so-called Yamaguchi-Yau ring which have shown to be useful in studying higher-genus mirror symmetry.
