Axion Inflation, Proton Decay and Leptogenesis in $SU(5)\times U(1)_{PQ}$

Qaisar Shafi; Sofiane M. Boucenna

Axion Inflation, Proton Decay and Leptogenesis in $SU(5)\times U(1)_{PQ}$

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arxiv 1712.06526 v2 pith:Y3VPEO4B submitted 2017-12-18 hep-ph astro-ph.CO

Sofiane M. Boucenna , Qaisar Shafi This is my paper · ORCID

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keywords axioninflationleptogenesismodelprotonadequatelyarisesasymmetry

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We implement inflation in a non-supersymmetric SU(5) model based on a non-minimal coupling of the axion field to gravity. The isocurvature fluctuations are adequately suppressed, axions comprise the dark matter, proton lifetime estimates are of order 8e34-3e35 years, and the observed baryon asymmetry arises via non-thermal leptogenesis. The presence of low scale colored scalars ensures unification of the Standard Model gauge couplings and also helps in stabilizing the electroweak vacuum.

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Five dimensional $SU(5) \times U(1)_{\rm PQ}$ grand unification
hep-ph 2024-12 conditional novelty 5.0 of 10

The authors propose a 5D SU(5) x U(1)_PQ orbifold model in which SU(5) breaking and a high-quality QCD axion from the fifth component of the U(1) field arise from the same boundary conditions, with intermediate-scale ...

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