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Hybrid Natural Low Scale Inflation

We discuss the phenomenological implications of hybrid natural inflation models in which the inflaton is a pseudo-Goldstone boson but inflation is terminated by a second scalar field. A feature of the scheme is that the scale of breaking of the Goldstone symmetry can be lower than the Planck scale a...

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Detalles Bibliográficos
Autores principales: Ross, Graham G, German, Gabriel
Lenguaje:eng
Publicado: 2010
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2010.06.017
http://cds.cern.ch/record/1237167
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author Ross, Graham G
German, Gabriel
author_facet Ross, Graham G
German, Gabriel
author_sort Ross, Graham G
collection CERN
description We discuss the phenomenological implications of hybrid natural inflation models in which the inflaton is a pseudo-Goldstone boson but inflation is terminated by a second scalar field. A feature of the scheme is that the scale of breaking of the Goldstone symmetry can be lower than the Planck scale and so gravitational corrections are under control. We show that, for supersymmetric models, the scale of inflation can be chosen anywhere between the Lyth upper bound and a value close to the electroweak breaking scale. Unlike previous models of low scale inflation the observed density perturbations and spectral index are readily obtained by the choice of the free parameters.
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spelling cern-12371672019-09-30T06:29:59Zdoi:10.1016/j.physletb.2010.06.017http://cds.cern.ch/record/1237167engRoss, Graham GGerman, GabrielHybrid Natural Low Scale InflationParticle Physics - PhenomenologyWe discuss the phenomenological implications of hybrid natural inflation models in which the inflaton is a pseudo-Goldstone boson but inflation is terminated by a second scalar field. A feature of the scheme is that the scale of breaking of the Goldstone symmetry can be lower than the Planck scale and so gravitational corrections are under control. We show that, for supersymmetric models, the scale of inflation can be chosen anywhere between the Lyth upper bound and a value close to the electroweak breaking scale. Unlike previous models of low scale inflation the observed density perturbations and spectral index are readily obtained by the choice of the free parameters.arXiv:1002.0029CERN-PH-TH-2010-022oai:cds.cern.ch:12371672010-02-02
spellingShingle Particle Physics - Phenomenology
Ross, Graham G
German, Gabriel
Hybrid Natural Low Scale Inflation
title Hybrid Natural Low Scale Inflation
title_full Hybrid Natural Low Scale Inflation
title_fullStr Hybrid Natural Low Scale Inflation
title_full_unstemmed Hybrid Natural Low Scale Inflation
title_short Hybrid Natural Low Scale Inflation
title_sort hybrid natural low scale inflation
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2010.06.017
http://cds.cern.ch/record/1237167
work_keys_str_mv AT rossgrahamg hybridnaturallowscaleinflation
AT germangabriel hybridnaturallowscaleinflation