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dc.contributor.authorBallesteros Martínez, Guillermo 
dc.contributor.authorCespedés Castillo, Sebastián Miguel 
dc.contributor.authorSantoni, Luca
dc.contributor.otherUAM. Departamento de Física Teóricaes_ES
dc.date.accessioned2023-05-08T10:52:34Z
dc.date.available2023-05-08T10:52:34Z
dc.date.issued2022-01-15
dc.identifier.citationJournal of High Energy Physics (JHEP) 2022.1 (2022): 74es_ES
dc.identifier.issn1126-6708 (print)es_ES
dc.identifier.issn1029-8479 (online)es_ES
dc.identifier.urihttp://hdl.handle.net/10486/707136
dc.description.abstractWe study the generation of a large power spectrum, necessary for primordial black hole formation, within the effective theory of single-field inflation. The mechanisms we consider include a transition into a ghost-inflation-like phase and scenarios where an exponentially growing mode is temporarily turned on. In the cases we discuss, the enhancement in the power spectrum results from either a swift change in some effective coupling or a modification of the dispersion relation for the perturbations, while the background evolution remains unchanged and approximately de Sitter throughout inflation. The robustness of the results is guaranteed thanks to a weakly broken galileon symmetry, which protects the effective couplings against large quantum corrections. We discuss how the enhancement of the power spectrum is related to the energy scale of the operators with weakly broken galileon invariance, and study the limits imposed by strong coupling and the validity of the perturbative expansiones_ES
dc.format.extent41 pag.es_ES
dc.format.mimetypeapplication/pdfes_ES
dc.language.isoenges_ES
dc.publisherSpringeres_ES
dc.relation.ispartofJournal of High Energy Physics (JHEP)es_ES
dc.rights© 2022 The Author(s)es_ES
dc.subject.otherInflationes_ES
dc.subject.otherSupergravityes_ES
dc.subject.otherCosmoses_ES
dc.titleLarge power spectrum and primordial black holes in the effective theory of inflationes_ES
dc.typearticlees_ES
dc.subject.ecienciaFísicaes_ES
dc.relation.publisherversionhttps://doi.org/10.1007/JHEP01(2022)074es_ES
dc.identifier.doi10.1007/JHEP01(2022)074es_ES
dc.identifier.publicationfirstpage74-1es_ES
dc.identifier.publicationissue1es_ES
dc.identifier.publicationlastpage74-41es_ES
dc.identifier.publicationvolume2022es_ES
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_ES
dc.rights.ccReconocimientoes_ES
dc.rights.accessRightsopenAccesses_ES
dc.facultadUAMFacultad de Cienciases_ES
dc.institutoUAMInstituto de Física Teórica (IFT)es_ES


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