Two-loop superstring five-point amplitude and S -duality

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dc.contributor.authorGomez, Humberto [UNESP]
dc.contributor.authorMafra, Carlos R.
dc.contributor.authorSchlotterer, Oliver
dc.contributor.institutionPerimeter Institute for Theoretical Physics
dc.contributor.institutionUniversity of Cambridge
dc.contributor.institutionAlbert-Einstein-Institut
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidad Santiago de Cali
dc.date.accessioned2018-12-11T17:01:37Z
dc.date.available2018-12-11T17:01:37Z
dc.date.issued2016-02-24
dc.description.abstractThe low-energy limit of the massless two-loop five-point amplitudes for both type IIA and type IIB superstrings is computed with the pure spinor formalism and its overall coefficient determined from first principles. For the type IIB theory, the five-graviton amplitude is found to be proportional to its tree-level counterpart at the corresponding order in α′. Their ratio ties in with expectations based on S-duality since it matches the same modular function E5/2 which relates the two-loop and tree-level four-graviton amplitudes. For R-symmetry violating states, the ratio between tree-level and two-loop amplitudes at the same α′-order carries an additional factor of -3/5. Its S-duality origin can be traced back to a modular form derived from E5/2.en
dc.description.affiliationPerimeter Institute for Theoretical Physics
dc.description.affiliationDAMTP University of Cambridge, Wilberforce Road
dc.description.affiliationMax-Planck-Institut für Gravitationsphysik Albert-Einstein-Institut
dc.description.affiliationInstituto de Física Teórica UNESP-Universidade Estadual Paulista, Caixa Postal 70532-2
dc.description.affiliationUniversidad Santiago de Cali, Calle 5 N 62-00
dc.description.affiliationUnespInstituto de Física Teórica UNESP-Universidade Estadual Paulista, Caixa Postal 70532-2
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.93.045030
dc.identifier.citationPhysical Review D, v. 93, n. 4, 2016.
dc.identifier.doi10.1103/PhysRevD.93.045030
dc.identifier.issn2470-0029
dc.identifier.issn2470-0010
dc.identifier.scopus2-s2.0-84960145861
dc.identifier.urihttp://hdl.handle.net/11449/172652
dc.language.isoeng
dc.relation.ispartofPhysical Review D
dc.relation.ispartofsjr1,801
dc.relation.ispartofsjr1,801
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.titleTwo-loop superstring five-point amplitude and S -dualityen
dc.typeArtigo

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