Axion, mu Term, and Supersymmetric Hybrid Inflation

Abstract

We show how successful supersymmetric hybrid inflation is realized in realistic models where the resolution of the minimal supersymmetric standard model mu problem is intimately linked with axion physics. The scalar fields that accompany the axion, such as the saxion, are closely monitored during and after inflation to ensure that the axion isocurvature perturbations lie below the observational limits. The scalar spectral index n_s is about 0.96 - 0.97, while the tensor-to-scalar ratio r, a canonical measure of gravity waves, lies well below the observable range in our example. The axion domain walls are inflated away, and depending on the axion decay constant f_a and the magnitude of the mu parameter, the axions and/or the lightest supersymmetric particle compose the dark matter in the universe. Non-thermal leptogenesis is naturally implemented in this class of models.

11 pages including 6 figures, uses Revtex, version published in Phys. Rev. D

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Cited by in corpus (3)

• $\mu$-Hybrid Inflation with Low Reheat Temperature and Observable Gravity Waves
• Axion Model with Intermediate Scale Fermionic Dark Matter
• Hybrid Inflation in Quasi-minimal Supergravity with Monotonic Inflationary Potentia