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arXiv · 1712.06526

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

Sofiane M. Boucenna·Qaisar Shafi
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Abstract

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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Sofiane M. Boucenna, Qaisar Shafi. 2017-12-18. Axion Inflation, Proton Decay and Leptogenesis in $SU(5)\times U(1)_{PQ}$. https://doi.org/10.1103/physrevd.97.075012

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