New Symmetries of QED
High Energy Physics - Theory
2015-06-10 v1 High Energy Physics - Phenomenology
Abstract
The soft photon theorem in U(1) gauge theories with only massless charged particles has recently been shown to be the Ward identity of an infinite-dimensional asymptotic symmetry group. This symmetry group is comprised of gauge transformations which approach angle-dependent constants at null infinity. In this paper, we extend the analysis to all U(1) theories, including those with massive charged particles such as QED.
Keywords
Cite
@article{arxiv.1506.02906,
title = {New Symmetries of QED},
author = {Daniel Kapec and Monica Pate and Andrew Strominger},
journal= {arXiv preprint arXiv:1506.02906},
year = {2015}
}
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17 pages