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Title: Large gauge transformations and little group for soft photons

Abstract

Recently, large gauge transformation (LGT), the residual gauge symmetry after gauge fixing that survives at null infinity, has drawn much attention concerning soft theorems and the memory effect. We point out that LGT charges in quantum electrodynamics are in fact one of noncompact generators of the two dimensional Euclidean group. Moreover, by comparing two equivalent descriptions of gauge transformation, we suggest that LGT is simply another way of describing the gauged little group for massless soft photons.

Authors:
 [1];  [2];  [3]
+ Show Author Affiliations
  1. Univ. of Wisconsin, Madison, WI (United States). Dept. of Physics; High Energy Accelerator Research Organization (KEK), Tsukuba (Japan). High Energy Accelerator Research Organization Theory Center. Inst. of particle and nuclear studies
  2. Inst. for Basic Science, Daejeon (Korea, Republic of). Center for Theoretical Physics of the Universe; Chungnam National Univ., Daejeon (Korea, Republic of). Dept. of Physics
  3. Univ. of Wisconsin, Madison, WI (United States). Dept. of Physics
Publication Date:
Research Org.:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1541127
Alternate Identifier(s):
OSTI ID: 1409463
Grant/Contract Number:  
FG02-95ER40896; FG-02-95ER40896
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 10; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Hamada, Yuta, Seo, Min-Seok, and Shiu, Gary. Large gauge transformations and little group for soft photons. United States: N. p., 2017. Web. doi:10.1103/physrevd.96.105013.
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Hamada, Yuta, Seo, Min-Seok, & Shiu, Gary. Large gauge transformations and little group for soft photons. United States. https://doi.org/10.1103/physrevd.96.105013
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Hamada, Yuta, Seo, Min-Seok, and Shiu, Gary. Mon . "Large gauge transformations and little group for soft photons". United States. https://doi.org/10.1103/physrevd.96.105013. https://www.osti.gov/servlets/purl/1541127.
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@article{osti_1541127,
title = {Large gauge transformations and little group for soft photons},
author = {Hamada, Yuta and Seo, Min-Seok and Shiu, Gary},
abstractNote = {Recently, large gauge transformation (LGT), the residual gauge symmetry after gauge fixing that survives at null infinity, has drawn much attention concerning soft theorems and the memory effect. We point out that LGT charges in quantum electrodynamics are in fact one of noncompact generators of the two dimensional Euclidean group. Moreover, by comparing two equivalent descriptions of gauge transformation, we suggest that LGT is simply another way of describing the gauged little group for massless soft photons.},
doi = {10.1103/physrevd.96.105013},
journal = {Physical Review D},
number = 10,
volume = 96,
place = {United States},
year = {Mon Nov 20 00:00:00 EST 2017},
month = {Mon Nov 20 00:00:00 EST 2017}
}
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https://doi.org/10.1103/physrevd.96.105013
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