Effective field theory in AdS: Continuum regime, soft bombs, and IR emergence

dc.contributor.authorCostantino, Alexandria
dc.contributor.authorFichet, Sylvain [UNESP]
dc.contributor.authorTanedo, Philip
dc.contributor.institutionUniversity of California
dc.contributor.institutionCalifornia Institute of Technology
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2021-06-25T10:49:08Z
dc.date.available2021-06-25T10:49:08Z
dc.date.issued2020-12-29
dc.description.abstractWe consider a scalar field in a slice of Lorentzian five-dimensional AdS at arbitrary energies. We show that the presence of bulk interactions separates the behavior of the theory into two different regimes: Kaluza-Klein and continuum. We determine the transition scale between these regimes and show that UV-brane correlation functions are independent of IR-brane-localized operators for four-momenta beyond this transition scale. The same bulk interactions that induce the transition also give rise to cascade decays. We study these cascade decays for the case of a cubic self-interaction in the continuum regime. We find that the cascade decay progresses slowly towards the IR region and gives rise to soft spherical final states, in accordance with former results from both gravity and CFT. We identify a recursion relation between integrated squared amplitudes of different leg numbers and thus evaluate the total rate. We find that cascade decays in the continuum regime are exponentially suppressed. This feature completes the picture of the IR brane as an emergent sector as seen from the UV brane. We briefly discuss consistency with the holographic dual description of glueballs and some implications for dark sector models.en
dc.description.affiliationDepartment of Physics and Astronomy University of California
dc.description.affiliationWalter Burke Institute for Theoretical Physics California Institute of Technology
dc.description.affiliationICTP South American Institute for Fundamental Research and IFT-UNESP, Rua Dr. Bento Teobaldo Ferraz 271
dc.description.affiliationUnespICTP South American Institute for Fundamental Research and IFT-UNESP, Rua Dr. Bento Teobaldo Ferraz 271
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.102.115038
dc.identifier.citationPhysical Review D, v. 102, n. 11, 2020.
dc.identifier.doi10.1103/PhysRevD.102.115038
dc.identifier.issn2470-0029
dc.identifier.issn2470-0010
dc.identifier.scopus2-s2.0-85099144948
dc.identifier.urihttp://hdl.handle.net/11449/207108
dc.language.isoeng
dc.relation.ispartofPhysical Review D
dc.sourceScopus
dc.titleEffective field theory in AdS: Continuum regime, soft bombs, and IR emergenceen
dc.typeArtigo

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