The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.
New symmetries of massless QED
Open accessAbstract
An infinite number of physically nontrivial symmetries are found for abelian gauge theories with massless charged particles. They are generated by large U(1) gauge transformations that asymptotically approach an arbitrary function $$ \varepsilon \left(z,\overline{z}\right) $$ on the conformal sphere at future null infinity ( ) but are independent of the retarded time. The value of ε at past null infinity ( ) is determined from that on by the condition that it take the same value at either end of any light ray crossing Minkowski space. The ε ≠ constant symmetries are spontaneously broken in the usual vacuum. The associated Goldstone modes are zero-momentum photons and comprise a U(1) boson living on the conformal sphere. The Ward identity associated with this asymptotic symmetry is shown to be the abelian soft photon theorem.
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Cites
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Self-citationOn BMS Invariance of Gravitational ScatteringPreprint
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Self-citationAsymptotic conditions and infrared divergences in quantum electrodynamics
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Cited by
Hawking, S. W., Perry, M. J., & Strominger, A. (2016) · Physical Review Letters · doi:10.1103/physrevlett.116.231301 · Cited by 764
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Metadata
- Authors
- He, T., Mitra, P., Porfyriadis, A. P., & Strominger, A.
- Venue
- Journal of High Energy Physics
- Published
- 2014-10
- Volume
- 2014
- Issue
- 10
- ISSN
- 1029-8479 (ISSN-L)
- OpenAlex
- W2084162291
- Cited by
- 386
- References
- 27
- FWCI
- 14.31
- Type
- journal article
- Language
- en
- Open access
- diamond
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