New Symmetries of QED

By D. Kapec, M. Pate, Andrew Strominger. 2015

218 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/e023b5a49a5bd37d54da09507408124d18e0913b

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Citations in the corpus

Soft Hair on Black Holes. (2016, background): “This theorem implies [41, 42, 43, 44, 45] an infinite number of previously unrecognized conserved quantities in all abelian gauge theories - electromagnetic analogs of the supertranslation charges.”
Subleading soft photons and large gauge transformations (2016, background): “An interesting question, which is outside of the scope of the present work, is how the field equations (with appropriate boundary conditions) imply the conservations of these charges, as for instance discussed in [2, 4] for the λ = O(1) case.”
Symmetries and charges of general relativity at null boundaries (2018, background): “One of the key motivations for studying horizon symmetries and charges is the realization that the associated global conservation laws place constraints on black hole evaporation, and that the (electric parity superrotation) charges constitute “soft hair” that may play a role in how information is r”
Lectures on the Infrared Structure of Gravity and Gauge Theory (2017, background): “It is odd that this symmetry of gravity was at least partially understood fifty years ago, whereas the precisely analogous symmetries in electromagnetism were only understood in the past few years [10, 11, 13, 14].”
Bridging Carrollian and celestial holography (2022, background): “the antipodal matching condition around spatial infinity as stated in [146].”