宋伟教授学术报告
Title: A BMS-invariant free scalar model
Speaker: Wei Song (宋伟)
Affiliation: Yau Mathematical Sciences Center, Tsinghua University
Time: 15:00-16:00, Wednesday, December 8th, 2021 (UTC+8, Beijing Time)
Inviter: Qiang Wen(文强), Yunfeng Jiang（江云峰）
Abstract
The BMS (Bondi-van der Burg-Metzner-Sachs) symmetry arises as the asymptotic symmetry of flat spacetime at null infinity, suggesting a holographic duality between Einstein gravity and some quantum field theory with BMS invariance. In particular, the BMS algebra in three dimensions is generated by super-rotation generators which form a Virasoro sub-algebra, together with mutually-commuting super-translation generators. In this talk, I will first review flat holography in three dimensions, and then describe a free scalar model in two dimensions exhibiting BMS symmetry.
About the Speaker
宋伟，2004年于南京大学获学士学位, 2009年博士毕业于中国科学院大学理论物理研究所,2009年至2014年先后于哈佛大学与普林斯顿大学从事博士后研究，2014年至2020年任清华大学丘成桐数学科学中心副教授，2021年至今任清华大学数学系教授。2016年获求是杰出青年。研究领域为量子引力与数学物理。
The seminar will be broadcasted online by Zoom.
Interested people are free to join, without registration in advance.
The Zoom info is
URL: https://us02web.zoom.us/j/3854420225?pwd=SXY4eWJKOTBFZWJDaE16aXpTamY1QT09
Meeting ID: 385 442 0225
Passcode: yauc
