Linking Starobinsky-type inflation in no-scale supergravity to MSSM

A novel realization of the Starobinsky inflationary model within a moderate extension of the Minimal Supersymmetric Standard Model (MSSM) is presented. The proposed superpotential is uniquely determined by applying a continuous R and a Bbb Z2 discrete symmetry, whereas the Kähler potential is associ...

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Detalles Bibliográficos
Autor: Pallis, C.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/96324
Acceso en línea:http://hdl.handle.net/10261/96324
Access Level:acceso abierto
Palabra clave:Supersymmetry and cosmology
Particle physics - cosmology connection
Cosmology of Theories beyond the SM
Inflation
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spelling Linking Starobinsky-type inflation in no-scale supergravity to MSSMPallis, C.Supersymmetry and cosmologyParticle physics - cosmology connectionCosmology of Theories beyond the SMInflationA novel realization of the Starobinsky inflationary model within a moderate extension of the Minimal Supersymmetric Standard Model (MSSM) is presented. The proposed superpotential is uniquely determined by applying a continuous R and a Bbb Z2 discrete symmetry, whereas the Kähler potential is associated with a no-scale-type SU(54,1)/SU(54) × U(1)R × Bbb Z2 Kähler manifold. The inflaton is identified with a Higgs-like modulus whose the vacuum expectation value controls the gravitational strength. Thanks to a strong enough coupling (with a parameter cT involved) between the inflaton and the Ricci scalar curvature, inflation can be attained even for subplanckian values of the inflaton with cT ≥ 76 and the corresponding effective theory being valid up to the Planck scale. The inflationary observables turn out to be in agreement with the current data and the inflaton mass is predicted to be 3centerdot1013GeV. At the cost of a relatively small superpotential coupling constant, the model offers also a resolution of the μ problem of MSSM for cT ≤ 4500 and gravitino heavier than about 104GeV. Supplementing MSSM by three right-handed neutrinos we show that spontaneously arising couplings between the inflaton and the particle content of MSSM not only ensure a sufficiently low reheating temperature but also support a scenario of non-thermal leptogenesis consistently with the neutrino oscillation parameters.This research was supported by the Generalitat Valenciana under contract PROMETEOII/2013/017.Peer reviewedInstitute of Physics PublishingSCOAP201420142014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/96324reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1088/1475-7516/2014/04/024info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/963242026-05-22T06:33:51Z
dc.title.none.fl_str_mv Linking Starobinsky-type inflation in no-scale supergravity to MSSM
title Linking Starobinsky-type inflation in no-scale supergravity to MSSM
spellingShingle Linking Starobinsky-type inflation in no-scale supergravity to MSSM
Pallis, C.
Supersymmetry and cosmology
Particle physics - cosmology connection
Cosmology of Theories beyond the SM
Inflation
title_short Linking Starobinsky-type inflation in no-scale supergravity to MSSM
title_full Linking Starobinsky-type inflation in no-scale supergravity to MSSM
title_fullStr Linking Starobinsky-type inflation in no-scale supergravity to MSSM
title_full_unstemmed Linking Starobinsky-type inflation in no-scale supergravity to MSSM
title_sort Linking Starobinsky-type inflation in no-scale supergravity to MSSM
dc.creator.none.fl_str_mv Pallis, C.
author Pallis, C.
author_facet Pallis, C.
author_role author
dc.contributor.none.fl_str_mv SCOAP
dc.subject.none.fl_str_mv Supersymmetry and cosmology
Particle physics - cosmology connection
Cosmology of Theories beyond the SM
Inflation
topic Supersymmetry and cosmology
Particle physics - cosmology connection
Cosmology of Theories beyond the SM
Inflation
description A novel realization of the Starobinsky inflationary model within a moderate extension of the Minimal Supersymmetric Standard Model (MSSM) is presented. The proposed superpotential is uniquely determined by applying a continuous R and a Bbb Z2 discrete symmetry, whereas the Kähler potential is associated with a no-scale-type SU(54,1)/SU(54) × U(1)R × Bbb Z2 Kähler manifold. The inflaton is identified with a Higgs-like modulus whose the vacuum expectation value controls the gravitational strength. Thanks to a strong enough coupling (with a parameter cT involved) between the inflaton and the Ricci scalar curvature, inflation can be attained even for subplanckian values of the inflaton with cT ≥ 76 and the corresponding effective theory being valid up to the Planck scale. The inflationary observables turn out to be in agreement with the current data and the inflaton mass is predicted to be 3centerdot1013GeV. At the cost of a relatively small superpotential coupling constant, the model offers also a resolution of the μ problem of MSSM for cT ≤ 4500 and gravitino heavier than about 104GeV. Supplementing MSSM by three right-handed neutrinos we show that spontaneously arising couplings between the inflaton and the particle content of MSSM not only ensure a sufficiently low reheating temperature but also support a scenario of non-thermal leptogenesis consistently with the neutrino oscillation parameters.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/96324
url http://hdl.handle.net/10261/96324
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1088/1475-7516/2014/04/024
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Institute of Physics Publishing
publisher.none.fl_str_mv Institute of Physics Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
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