Curvature Perturbation from Supersymmetric Flat Directions

We show that a contribution to the total curvature perturbation may be due to the presence of flat directions in supersymmetric models. It is generated at the first os- cillation of the flat direction condensate when the latter relaxes to the minimum of its potential after the end of inflation. We a...

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Detalles Bibliográficos
Autores principales: Riotto, Antonio, Riva, Francesco
Lenguaje:eng
Publicado: 2008
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2008.10.058
http://cds.cern.ch/record/1111085
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author Riotto, Antonio
Riva, Francesco
author_facet Riotto, Antonio
Riva, Francesco
author_sort Riotto, Antonio
collection CERN
description We show that a contribution to the total curvature perturbation may be due to the presence of flat directions in supersymmetric models. It is generated at the first os- cillation of the flat direction condensate when the latter relaxes to the minimum of its potential after the end of inflation. We also point out that, if the contribution to the total curvature perturbation from supersymmetric flat direction is the dominant one, then a significant level of non-Gaussianity in the cosmological perturbation is also naturally expected.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2008
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spelling cern-11110852023-03-15T19:11:20Zdoi:10.1016/j.physletb.2008.10.058http://cds.cern.ch/record/1111085engRiotto, AntonioRiva, FrancescoCurvature Perturbation from Supersymmetric Flat DirectionsParticle Physics - PhenomenologyWe show that a contribution to the total curvature perturbation may be due to the presence of flat directions in supersymmetric models. It is generated at the first os- cillation of the flat direction condensate when the latter relaxes to the minimum of its potential after the end of inflation. We also point out that, if the contribution to the total curvature perturbation from supersymmetric flat direction is the dominant one, then a significant level of non-Gaussianity in the cosmological perturbation is also naturally expected.We show that a contribution to the total curvature perturbation may be due to the presence of flat directions in supersymmetric models. It is generated at the first oscillation of the flat direction condensate when the latter relaxes to the minimum of its potential after the end of inflation. We also point out that, if the contribution to the total curvature perturbation from supersymmetric flat direction is the dominant one, then a significant level of non-Gaussianity in the cosmological perturbation is also naturally expected.We show that a contribution to the total curvature perturbation may be due to the presence of flat directions in supersymmetric models. It is generated at the first os- cillation of the flat direction condensate when the latter relaxes to the minimum of its potential after the end of inflation. We also point out that, if the contribution to the total curvature perturbation from supersymmetric flat direction is the dominant one, then a significant level of non-Gaussianity in the cosmological perturbation is also naturally expected.arXiv:0806.3382CERN-PH-TH-2008-131CERN-PH-TH-2008-131oai:cds.cern.ch:11110852008-06-23
spellingShingle Particle Physics - Phenomenology
Riotto, Antonio
Riva, Francesco
Curvature Perturbation from Supersymmetric Flat Directions
title Curvature Perturbation from Supersymmetric Flat Directions
title_full Curvature Perturbation from Supersymmetric Flat Directions
title_fullStr Curvature Perturbation from Supersymmetric Flat Directions
title_full_unstemmed Curvature Perturbation from Supersymmetric Flat Directions
title_short Curvature Perturbation from Supersymmetric Flat Directions
title_sort curvature perturbation from supersymmetric flat directions
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2008.10.058
http://cds.cern.ch/record/1111085
work_keys_str_mv AT riottoantonio curvatureperturbationfromsupersymmetricflatdirections
AT rivafrancesco curvatureperturbationfromsupersymmetricflatdirections

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