Realistic Hybrid Inflation in 5D Orbifold SO(10) GUT

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dc.creatorFukuyama, Takeshi
dc.creatorOkada, Nobuchika
dc.creatorOsaka, Toshiyuki
dc.date2008-06-27
dc.date.accessioned2026-07-07T12:38:40Z
dc.date.available2026-07-07T12:38:40Z
dc.descriptionWe discuss the smooth hybrid inflation scenario in the context of a simple supersymmetric SO(10) GUT in 5D orbifold. In this GUT model, the SO(10) gauge symmetry is broken down to the Pati-Salam (PS) gauge group, SU(4)$_c \times$ SU(2)$_L \times$ SU(2)$_R$, by orbifold boundary conditions and all matter and Higgs multiplets are placed only on the brane (PS brane) where only the PS symmetry is manifest. Further breaking of the Pati-Salam group to the Standard Model one is realized by VEVs of the Higgs multiplets $({\bf 4},{\bf 1},{\bf 2}) \oplus (\overline{\bf 4},{\bf 1},{\bf 2})$. The gauge coupling unification is successfully realized at $M_{\rm GUT} =4.6 \times 10^{17}$ GeV after incorporating the threshold corrections of the Kaluza-Klein modes, with the compactification scale (assumed to be the same as the PS symmetry breaking scale) $M_c = v_{\rm PS}= 1.2 \times 10^{16}$ GeV. We show that this orbifold GUT model can naturally leads us to the smooth hybrid inflation, which tunes out to be consistent with the WMAP 5-year data with the predicted $M_{\rm GUT}$ and $v_{PS}$ in the model.
dc.description14 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0806.4626
dc.identifierhttp://arxiv.org/abs/0806.4626
dc.identifierJCAP 0809:024,2008
dc.identifierdoi:10.1088/1475-7516/2008/09/024
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/218838
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleRealistic Hybrid Inflation in 5D Orbifold SO(10) GUT
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