汇报标题 (Title)：An Observable in Classical Pure AdS3 Gravity: the Twist along a Geodesic（一个在经典AdS3纯引力中的观丈量：即沿测地线的旋转）
汇报人 (Speaker)：吴洁强 副钻研员（中国科学院理论物理钻研所）
汇报功夫 (Time)：2024年1月9日(周二) 15:00-17:00
汇报地址 (Place)：校本部 G313
约请人 (Inviter)：张弘 副教授
主办部门：理学院物理系
提要 (Abstract)：
In this work, we consider a little-studied observable in classical pure AdS3 gravity: the twist along a geodesic. The motivation is that the twist only supports on the geodesic and may be a candidate element in the center. We study the properties of the twist and get the following results. First, we get the system's evolution generated by the twist, which exhibits a relative shift along the geodesic. Second, we show that the twist commutes with the length of the same geodesic, which supports the proposal that the twist is a candidate element in the center.
