Soft photon theorem in the small negative cosmological constant limit

A bstract We study the effect of electromagnetic interactions on the classical soft theorems on an asymptotically AdS background in 4 spacetime dimensions, in the limit of a small cosmological constant or equivalently a large AdS radius l . This identifies 1 /l 2 perturbative corrections to the know...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2021; no. 8; pp. 1 - 38
Main Authors Banerjee, Nabamita, Fernandes, Karan, Mitra, Arpita
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 20.08.2021
Springer Nature B.V
SpringerOpen
Subjects
Asymptotic properties
Classical and Quantum Gravitation
Classical Theories of Gravity
Cosmological constant
Electromagnetic interactions
Elementary Particles
Equivalence
Gauge Symmetry
High energy physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Spacetime
String Theory
Theorems
Gauge Symmetry
Classical Theories of Gravity
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Summary:A bstract We study the effect of electromagnetic interactions on the classical soft theorems on an asymptotically AdS background in 4 spacetime dimensions, in the limit of a small cosmological constant or equivalently a large AdS radius l . This identifies 1 /l 2 perturbative corrections to the known asymptotically flat spacetime leading and subleading soft factors. Our analysis is only valid to leading order in 1 /l 2 . The leading soft factor can be expected to be universal and holds beyond tree level. This allows us to derive a 1 /l 2 corrected Ward identity, following the known equivalence between large gauge Ward identities and soft theorems in asymptotically flat spacetimes.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP08(2021)105