About | People | Research | Events | Join Us | Contact | 中文版 
 

Phys. Lett. B  822, 136698 (2021)

Infrared photons and asymptotic symmetries

Zhengwen Liu1 and Pujian Mao2,*

1 Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany

2 Center for Joint Quantum Studies and Department of Physics, School of Science, Tianjin University, 135 Yaguan Road, Tianjin 300350, China

* Corresponding Authors:  Z. Liu (Email: zhengwen.liu@desy.de )  P. Mao (Email: pjmao@tju.edu.cn )

Abstract

S-matrix elements exhibit universal factorization when multiple infrared photons are emitted in scattering processes. We explicitly show that the leading soft factorization of tree-level amplitudes with the emission of any number of soft photons can be interpreted as the Ward identity of the asymptotic symmetry of gauge theory.

关闭窗口

天津大学理学院 量子交叉研究中心   地址:天津津南区 雅观路135号 天津大学北洋园校区32楼146 
Center for Joint Quantum Studies, School of Science, Tianjin University     Address : Yaguan Road 135, Jinnan District, 300350 Tianjin, P. R. China