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Double-soft behavior of the dilaton of spontaneously broken conformal invariance
Stockholms universitet, Nordiska institutet för teoretisk fysik (Nordita). University of Copenhagen, Denmark.
Rekke forfattare: 32017 (engelsk)Inngår i: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, nr 9, artikkel-id 001Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The Ward identities involving the currents associated to the spontaneously broken scale and special conformal transformations are derived and used to determine, through linear order in the two soft-dilaton momenta, the double-soft behavior of scattering amplitudes involving two soft dilatons and any number of other particles. It turns out that the double-soft behavior is equivalent to performing two single-soft limits one after the other. We confirm the new double-soft theorem perturbatively at tree-level in a D-dimensional conformal field theory model, as well as nonperturbatively by using the gravity dual of N = 4 super Yang-Mills on the Coulomb branch; i.e. the Dirac-Born-Infeld action on AdS(5) x S-5.

sted, utgiver, år, opplag, sider
2017. nr 9, artikkel-id 001
Emneord [en]
Space-Time Symmetries, Spontaneous Symmetry Breaking, Scattering Amplitudes, Conformal Field Models in String Theory
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-147919DOI: 10.1007/JHEP09(2017)001ISI: 000411020200001OAI: oai:DiVA.org:su-147919DiVA, id: diva2:1149832
Tilgjengelig fra: 2017-10-17 Laget: 2017-10-17 Sist oppdatert: 2017-10-17bibliografisk kontrollert

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