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Supersymmetric standard model of inflation with extra dimensions

Supersymmetric standard model of inflation with extra dimensions
Supersymmetric standard model of inflation with extra dimensions
We embed the supersymmetric standard model of hybrid inflation based on the next-to-minimal superpotential term ?NHuHd supplemented by an inflaton term ??N2 into an extra-dimensional framework, in which all the Higgs fields and singlets live in the bulk, while all the matter fields live on the brane. All the parameters of the effective 4D model can then be naturally understood in terms of a fundamental (“string”) scale M*?1013 GeV and a brane supersymmetry breaking scale 108 GeV, of the same order as the height of the inflaton potential during inflation. In particular, the very small Yukawa couplings ????10-10, necessary for the model to solve the strong CP problem and to generate the correct effective ? term after inflation, can be naturally understood in terms of volume suppression factors. The brane scalar masses are naturally of order a TeV while the bulk inflaton mass is naturally in the MeV range sufficient to satisfy the slow roll constraints. Curvature perturbations are generated after inflation from the isocurvature perturbations of the supersymmetric Higgs field as discussed in a companion paper.
1550-7998
Bastero-Gil, M.
b329c554-20e8-4180-af13-faaa34be2f84
Di Clemente, V.
4f38d85a-1c05-44c2-9e50-1ab950ca843f
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Bastero-Gil, M.
b329c554-20e8-4180-af13-faaa34be2f84
Di Clemente, V.
4f38d85a-1c05-44c2-9e50-1ab950ca843f
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538

Bastero-Gil, M., Di Clemente, V. and King, S.F. (2003) Supersymmetric standard model of inflation with extra dimensions. Physical Review D, 67 (8). (doi:10.1103/PhysRevD.67.083504).

Record type: Article

Abstract

We embed the supersymmetric standard model of hybrid inflation based on the next-to-minimal superpotential term ?NHuHd supplemented by an inflaton term ??N2 into an extra-dimensional framework, in which all the Higgs fields and singlets live in the bulk, while all the matter fields live on the brane. All the parameters of the effective 4D model can then be naturally understood in terms of a fundamental (“string”) scale M*?1013 GeV and a brane supersymmetry breaking scale 108 GeV, of the same order as the height of the inflaton potential during inflation. In particular, the very small Yukawa couplings ????10-10, necessary for the model to solve the strong CP problem and to generate the correct effective ? term after inflation, can be naturally understood in terms of volume suppression factors. The brane scalar masses are naturally of order a TeV while the bulk inflaton mass is naturally in the MeV range sufficient to satisfy the slow roll constraints. Curvature perturbations are generated after inflation from the isocurvature perturbations of the supersymmetric Higgs field as discussed in a companion paper.

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Published date: 21 April 2003

Identifiers

Local EPrints ID: 57036
URI: https://eprints.soton.ac.uk/id/eprint/57036
ISSN: 1550-7998
PURE UUID: ae3097e9-045a-4af9-a242-9231c278b439

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Date deposited: 13 Aug 2008
Last modified: 13 Mar 2019 20:34

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