1/L 2 corrected soft photon theorem from a CFT3 Ward identity

Abstract Classical soft theorems applied to probe scattering processes on AdS4 spacetimes predict the existence of perturbative 1/L 2 corrections to the soft photon and soft graviton factors of asymptotically flat spacetimes. In this paper, we establish that the 1/L 2 corrected soft photon theorem c...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2023; no. 4; pp. 1 - 29
Main Authors Nabamita Banerjee, Karan Fernandes, Arpita Mitra
Format Journal Article
LanguageEnglish
Published SpringerOpen 13.04.2023
Subjects
AdS-CFT Correspondence
Conformal and W Symmetry
Scattering Amplitudes
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Summary:Abstract Classical soft theorems applied to probe scattering processes on AdS4 spacetimes predict the existence of perturbative 1/L 2 corrections to the soft photon and soft graviton factors of asymptotically flat spacetimes. In this paper, we establish that the 1/L 2 corrected soft photon theorem can be derived from a large N CFT3 Ward identity. We derive a perturbed soft photon mode operator on a flat spacetime patch in global AdS4 in terms of an integrated expression of the boundary CFT current. Using the same in the CFT3 Ward identity, we recover the 1/L 2 corrected soft photon factor derived from classical soft theorems.
ISSN:1029-8479
DOI:10.1007/JHEP04(2023)055