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

16 Apr 2018  ·  Boucenna Sofiane M., Shafi Qaisar ·

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. read more

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High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics