Title： Loop operators in three-dimensional N=2 fishnet theories
Speaker：Wu, Junbao (吴俊宝)
Affiliation：Tianjin University
Time：14:00 - 15:30, 15/9/2020
Tencent Meeting ID：443 215 349
Inviter：Wen, Qiang
Abstract：In this talk, I will introduce our recent work on loop operators in three-dimensional N=2 fishnet theories. We construct circular loop operators which are at least classically half-BPS. We develop a new regularization scheme at frame -1 which is suitable for the study of the fermionic BPS loops in general super-Chern-Simons- matter theories. We initialize the perturbative computation for the vacuum expectation values of the circular BPS loop operators based on this scheme. We construct the cusped line operators as well, and compute the vacuum expectation values of these cusped line operators up to two-loop order. We find that the universal cusp anomalous dimension vanishes, if we put aside the fact that the generalized potential has a double pole in the 1/\epsilon expansion. This talk is based on the work done with Jia Tian and Bin Chen.
报告人介绍：吴俊宝，天津大学教授。2001年本科毕业于北京大学，2006年于北京大学获得博士学位。2006年-2010年先后在意大利SISSA和韩国KIAS做博士后工作。2010年-2017年先后在中国科学院高能物理研究所和北京航空航天大学任副研究员，2017年加入天津大学，任教授。主要从事超弦理论和量子场论的研究，特别是规范/引力对应中的可积性结构、非局域算符及其全息描述、场论和弦论中散射振幅方面的研究。研究工作曾经获得国家自然科学基金委优秀青年基金支持。
