Title: Higher-point AdS amplitudes from flat space and factorization

Speaker: Xinan Zhou 周稀楠 (University of Chinese Academy of Sciences)

Time: 2:00 pm, Nov 2 (Thursday) 2023

Location: 理科楼C302

Abstract: Much of the modern developments of holographic correlators is based on bootstrap methods. These methods rely heavily on the use of superconformal symmetry and become increasingly cumbersome when going to higher points. In this talk, I introduce a new constructive approach which is based on the flat-space limit and amplitude factorization in curved space, and makes minimal use of superconformal symmetry. I demonstrate this method in the example of SYM in AdS and explain how to compute the six-point amplitude.

Bio: Xinan Zhou received his Bachelor's degree from University of Science and Technology of China and PhD from Stony Brook University. After PhD he was PCTS Postdoctoral Fellow and Sam B. Treiman Fellow at Princeton Center of Theoretical Science in Princeton University from 2018 to 2021. Since 2021, he has been Tenure-track Assistant Professor at the Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences. His research focuses on AdS/CFT, conformal bootstrap and scattering amplitudes. He has written 34 papers with more than 1500 citations.