报告题目：Celestial holography on backgrounds            

报告人：朱彬 博士后 （英国爱丁堡大学）

报告时间：2023年12月21日（周四）下午15:30-16:30

报告地点：北洋园校区49教210室

报告摘要：

The study of celestial holography on non-trivial backgrounds has recently gained interest. In this talk, I will first review some basic ideas of celestial holography. I will discuss two specific examples of celestial holography on non-trivial backgrounds. In the first example, I will show that the celestial MHV gluon amplitudes evaluated in the presence of a spherical dilaton shockwave are given by the correlation functions of primary field operators factorized into the holomorphic current operators times the “light” Liouville operators. They are evaluated in the semiclassical limit of Liouville CFT. Then, I will consider MHV amplitudes on self-dual radiative backgrounds as the second example. I will show that celestial soft gluon algebra and $w_{1+\infty}$ algebra are undeformed on these backgrounds.

报告人简介：

朱彬，英国爱丁堡大学博士后。2022年于美国东北大学获博士学位。