Multifield dynamics in Higgs-otic inflation

Journal of High Energy Physics 2016.1 (2016): 128 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)

Detalles Bibliográficos
Autores: Bielleman, S., Ibañez Santiago, Luis Enrique, Pedro, Francisco G., Valenzuela, I.
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/671562
Acceso en línea:http://hdl.handle.net/10486/671562
https://dx.doi.org/10.1007/JHEP01(2016)128
Access Level:acceso abierto
Palabra clave:Cosmology of Theories beyond the SM
Flux compactifications
D-branes
Compactification and String Models
Física
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spelling Multifield dynamics in Higgs-otic inflationBielleman, S.Ibañez Santiago, Luis EnriquePedro, Francisco G.Valenzuela, I.Cosmology of Theories beyond the SMFlux compactificationsD-branesCompactification and String ModelsFísicaJournal of High Energy Physics 2016.1 (2016): 128 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)In Higgs-otic inflation a complex neutral scalar combination of the h0 and H0 MSSM Higgs fields plays the role of inflaton in a chaotic fashion. The potential is protected from large trans-Planckian corrections at large inflaton if the system is embedded in string theory so that the Higgs fields parametrize a D-brane position. The inflaton potential is then given by a DBI+CS D-brane action yielding an approximate linear behaviour at large field. The inflaton scalar potential is a 2-field model with specific non-canonical kinetic terms. Previous computations of the cosmological parameters (i.e. scalar and tensor perturbations) did not take into account the full 2-field character of the model, ignoring in particular the presence of isocurvature perturbations and their coupling to the adiabatic modes. It is well known that for generic 2-field potentials such effects may significantly alter the observational signatures of a given model. We perform a full analysis of adiabatic and isocurvature perturbations in the Higgs-otic 2-field model. We show that the predictivity of the model is increased compared to the adiabatic approximation. Isocurvature perturbations moderately feed back into adiabatic fluctuations. However, the isocurvature component is exponentially damped by the end of inflation. The tensor to scalar ratio varies in a region r = 0.08–0.12, consistent with combined Planck/BICEP resultsWe would like to thank F. Marchesano, A. Uranga and A. Westphal for useful discussions. We acknowledge the use of [70–76] in the development and debugging of our numerical methods. This work has been supported by the ERC Advanced Grant SPLE under contract ERC-2012-ADG-20120216-320421, by the grant FPA2012-32828 from the MINECO, and the grant SEV-2012-0249 of the “Centro de Excelencia Severo Ochoa” Programme. I.V. is supported through the FPU grant AP-2012-2690Springer VerlagDepartamento de Física TeóricaFacultad de Ciencias20162016-01-20research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/671562https://dx.doi.org/10.1007/JHEP01(2016)128reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6715622026-06-23T12:46:27Z
dc.title.none.fl_str_mv Multifield dynamics in Higgs-otic inflation
title Multifield dynamics in Higgs-otic inflation
spellingShingle Multifield dynamics in Higgs-otic inflation
Bielleman, S.
Cosmology of Theories beyond the SM
Flux compactifications
D-branes
Compactification and String Models
Física
title_short Multifield dynamics in Higgs-otic inflation
title_full Multifield dynamics in Higgs-otic inflation
title_fullStr Multifield dynamics in Higgs-otic inflation
title_full_unstemmed Multifield dynamics in Higgs-otic inflation
title_sort Multifield dynamics in Higgs-otic inflation
dc.creator.none.fl_str_mv Bielleman, S.
Ibañez Santiago, Luis Enrique
Pedro, Francisco G.
Valenzuela, I.
author Bielleman, S.
author_facet Bielleman, S.
Ibañez Santiago, Luis Enrique
Pedro, Francisco G.
Valenzuela, I.
author_role author
author2 Ibañez Santiago, Luis Enrique
Pedro, Francisco G.
Valenzuela, I.
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Física Teórica
Facultad de Ciencias
dc.subject.none.fl_str_mv Cosmology of Theories beyond the SM
Flux compactifications
D-branes
Compactification and String Models
Física
topic Cosmology of Theories beyond the SM
Flux compactifications
D-branes
Compactification and String Models
Física
description Journal of High Energy Physics 2016.1 (2016): 128 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-01-20
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/671562
https://dx.doi.org/10.1007/JHEP01(2016)128
url http://hdl.handle.net/10486/671562
https://dx.doi.org/10.1007/JHEP01(2016)128
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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