Testing Supersymmetric Grand Unified Models of Inflation

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dc.creatorSenoguz, V. N.
dc.creatorShafi, Q.
dc.date2003-05-08
dc.date2003-06-15
dc.date.accessioned2026-07-07T10:28:48Z
dc.date.available2026-07-07T10:28:48Z
dc.descriptionWe reconsider a class of well motivated supersymmetric models in which inflation is associated with the breaking of a gauge symmetry G to H, with the symmetry breaking scale M~10^16 GeV. Starting with a renormalizable superpotential, we include both radiative and supergravity corrections to derive the inflationary potential. The scalar spectral index n_s can exceed unity in some cases, and it cannot be smaller than 0.98 if the number of e-foldings corresponding to the present horizon scale is around 60. Two distinct variations of this scenario are discussed in which non-renormalizable terms allowed by the symmetries are included in the superpotential, and one finds n_s>=0.97. The models discussed feature a tensor to scalar ratio r<~10^-4, while dn_s/dlnk<~10^-3. If G corresponds to SO(10) or one of its rank five subgroups, the observed baryon asymmetry is naturally explained via leptogenesis.
dc.description1+16 pages, 7 figures; minor revisions, references added, to appear in Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/hep-ph/0305089
dc.identifierhttp://arxiv.org/abs/hep-ph/0305089
dc.identifierPhys.Lett.B567:79,2003; Phys.Lett.B567:79-86,2003
dc.identifierdoi:10.1016/j.physletb.2003.06.030
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177578
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleTesting Supersymmetric Grand Unified Models of Inflation
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