Abstract
We show that the subleading soft photon theorem in a (d + 2)-dimensional massless abelian gauge theory gives rise to a Ward identity corresponding to divergent large gauge transformations acting on the celestial sphere at null infinity. We further generalize our analysis to (d + 2)-dimensional non-abelian gauge theories and show that the leading and subleading soft gluon theorem give rise to Ward identities corresponding to asymptotic symmetries of the theory.
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He, T., Mitra, P. Asymptotic symmetries in (d + 2)-dimensional gauge theories. J. High Energ. Phys. 2019, 277 (2019). https://doi.org/10.1007/JHEP10(2019)277
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DOI: https://doi.org/10.1007/JHEP10(2019)277