Infrared photons and asymptotic symmetries
High Energy Physics - Theory
2021-10-13 v2
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.
Keywords
Cite
@article{arxiv.2107.03240,
title = {Infrared photons and asymptotic symmetries},
author = {Zhengwen Liu and Pujian Mao},
journal= {arXiv preprint arXiv:2107.03240},
year = {2021}
}
Comments
10 pages, v2: minor revision with several issues clarified and comments added, typo corrected