讲座主题：Weyl double copy in vacuum spacetimes

专家姓名：韩善忠

工作单位：丹麦尼尔斯.玻尓研究所

讲座时间：2022年10月5日15:00-16:30

讲座地点：腾讯会议：920-185-095

主办单位：9728太阳集团物理与电子信息学院

内容摘要：

The double copy is currently a highly researched prescription for connecting (non-)abelian gauge theory solutions with gravitational counterparts. It has various applications: calculations of scattering amplitudes, gravitational wave physics, correspondence between classical gravity fields and gauge fields, and so on. In this talk, I will briefly review two types of classical double copies---Kerr-Schild double copy and Weyl double copy. A new method for verifying the Weyl double copy relation for non-twisting vacuum Petrov type N and vacuum Petrov type D solutions will be presented. The case of type III solutions will also be discussed. Based on this methodology, I will extend the research to vacuum spacetimes with a cosmological constant and show that the zeroth and single copies satisfy conformally invariant field equations in conformally flat spacetime. In particular, I will demonstrate how the zeroth copy is critical in radiation solution.

主讲人介绍：

韩善忠，哥本哈根大学尼尔斯·玻尔研究所在读博士，2016年本科毕业于9728太阳集团应用物理系，2019年硕士毕业于北京师范大学引力组。其中，2018年加拿大圆周理论物理研究所秋季访问研究生，2022年伦敦玛丽女王大学秋季访问研究生。