Asymptotic Symmetries and Weinberg's Soft Photon Theorem in Mink$_{d+2}$
High Energy Physics - Theory
2023-09-25 v3 High Energy Physics - Phenomenology
Abstract
We show that Weinberg's leading soft photon theorem in massless abelian gauge theories implies the existence of an infinite-dimensional large gauge symmetry which acts non-trivially on the null boundaries of -dimensional Minkowski spacetime. These symmetries are parameterized by an arbitrary function of the -dimensional celestial sphere living at . This extends the previously established equivalence between Weinberg's leading soft theorem and asymptotic symmetries from four and higher even dimensions to \emph{all} higher dimensions.
Keywords
Cite
@article{arxiv.1903.02608,
title = {Asymptotic Symmetries and Weinberg's Soft Photon Theorem in Mink$_{d+2}$},
author = {Temple He and Prahar Mitra},
journal= {arXiv preprint arXiv:1903.02608},
year = {2023}
}
Comments
30 pages; v2: Added reference and minor clarification comments, fixed minor typos, version to appear in JHEP; v3: Corrected minor typo in equation