Date: 10 Nov. 2022, 10:00am

Speaker: Xinan Zhou 周稀楠

Affiliation: Kavli Institute, UCAS 

Tencent/VooV Meeting ID: 973-6909-6865

Online Meeting Link: https://meeting.tencent.com/dm/ZGVDkboF0pFP

Abstract: 

Holographic correlators are the most basic objects to exploit and explore the AdS/CFT correspondence. They encode a wealth of theoretical data and allow one to analytically study theories in strongly coupled phases. Holographic correlators can also be viewed as scattering amplitudes in AdS space, and therefore provide a valuable opportunity to explore the curved space extensions of various remarkable properties of flat-space scattering amplitudes. However, holographic correlators are notoriously difficult to compute and only until recently efficient modern methods were invented. In this review talk, I will give an overview of the recent progress in studying holographic correlators. I will show how methods based on bootstrap ideas allow one to circumvent the unsurmountable difficulties of the traditional approach and to obtain general results in various string theory and M-theory backgrounds. In addition to reviewing these bootstrap results, I will also mention two promising new directions where explorations are just starting. The first is trying to establish an on-shell scattering amplitude program in AdS where there is now an accumulation of evidence for AdS avatars of flat-space features of amplitudes. The second is the emergence of a new connection with integrability where preliminary investigations suggest certain holographic correlators enjoy a Yangian symmetry.

Introduction of Speaker:

周稀楠，2013年本科毕业于中国科学技术大学，2018年在纽约州立大学石溪分校杨振宁理论物理研究所取得博士学位。2018年-2021年在普林斯顿大学普林斯顿理论科学中心作为PCTS Fellow和Sam B. Treiman Postdoctoral Fellow从事博士后研究。2021年9月加入中国科学院大学，现为卡弗里理论科学研究所长聘教轨助理教授。近年来的研究兴趣主要集中在共形场论，AdS/CFT对偶和散射振幅。目前在Phys.Rev.Lett，Phys.Rev.X，JHEP等学术期刊上发表论文26篇，总引用1100余次。