报告题目：Classification of Orientifold Calabi-Yau three-folds

报告人： 高昕

报告时间：2021年6月7日（星期一）14：00（北京时间）

报告地点：吉林大学中心校区物理楼302，在线报告（ZOOM ID： 821 6031 8224）

报告摘要：

We establish an orientifold Calabi-Yau threefold database for h^{1,1}(X) <= 6 by considering  non-trivial Z_2 divisor exchange involutions. We first determine the topology for each individual divisors, identify and classify the proper involutions which are globally consistent across all disjoint phases of the Kahler cone for each unique geometry.  Each of the proper involutions will result in an orientifold Calabi-Yau manifolds. Then we clarify all possible fixed loci under the proper involution, thereby determining the locations of different types of O-planes. It shows that under the proper involutions one end up with majority the O3/O7-planes system and most of them will further admit a naive Type IIB string vacua. The geometry with freely acting involution was also determined. We further determine the splitting of the Hodge numbers into odd/even parity in the orbifold limit.

报告人简介：

高昕，四川大学36365线路检测中心研究员。2008年本科毕业于北京师范大学，2014年博士毕业于中科院理论物理所，期间在德国马克斯-普朗克物理研究所博士联合培养。此后分别于美国弗吉尼亚理工大学，意大利国家核物理研究所/罗马第二大学，德国海德堡大学理论物理研究所从事博士后工作，目前在四川大学工作。

举办单位：36365线路检测中心

　　　　　吉林大学理论物理中心