报告题目：On effective field theory with celestial duals

报告人：任乐成 博士（布朗大学）

报告时间：2023年06月02日（周五）下午15:30-16:30

报告地点：北洋园校区49教210室

报告摘要：

We compute the deformation of the $w_{1+\infty}$ algebra of soft graviton, gluon and scalar currents in the Celestial CFT due to non-minimal couplings. Such deformed algebra shares some similarities with the $W_{1+\infty}$ algebra but has essential differences. We find that the Jacobi identity of the algebra, as well as the associativity of the OPE between these soft current operators, are satisfied only when the spectrum and couplings of the theory obey certain constraints. We also study the effect of these constraints on the amplitudes in the 4d bulk theory.

参考文献：

[1] J. Mago, L. Ren, A.Y. Srikant and A. Volovich, Deformed $w_{1+\infty}$ Algebras in the Celestial CFT, arXiv:2111.11356 [hep-th].
[2] L. Ren, M. Spradlin, A. Yelleshpur Srikant and A. Volovich, On effective field theories with celestial duals, JHEP 08 (2022), 251;

报告人简介：

2015.9 -- 2019.7 北京师范大学，物理学学士
2019.9 -- 布朗大学，物理学博士（导师：Dr. Anastasia Volovich）