Phys. Rev. D 95, 125011 (2017) arXiv link
New electromagnetic memories and soft photon theorems
Pujian Mao1, Hao Ouyang2, Jun-Bao Wu3,4,5 and Xiaoning Wu6
1 Institute of High Energy Physics and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, People’s Republic of China
2 School of Physical Sciences, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, People’s Republic of China
3 School of Science, Tianjin University, 92 Weijin Road, Tianjin 300072, People’s Republic of China
4 School of Physics and Nuclear Energy Engineering, Beihang University, 37 Xueyuan Road, Beijing 100191, People’s Republic of China
5 Center for High Energy Physics, Peking University, 5 Yiheyuan Road, Beijing 100871, People’s Republic of China
6 Institute of Mathematics, Academy of Mathematics and System Science, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
P. Mao (Email: maopj@ihep.ac.cn) H. Ouyang (Email:ouyangh@ihep.ac.cn)
J.-B. Wu (Email: junbao.wu@tju.edu.cn ) X. Wu (Email: wuxn@amss.ac.cn )
Abstract
In this paper, we present a new type of electromagnetic memory. It is a “magnetic” type, or B mode, radiation memory effect. Rather than a residual velocity, we find a position displacement of a charged particle induced by the B mode radiation with memory. We find two types of electromagnetic displacement (ordinary and null). We also show that the null electromagnetic memory formulas are nothing but a Fourier transformation of soft photon theorems.
