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arXiv · 1304.8041

Supersymmetric hybrid inflation with a light scalar

Stefano Orani·Arttu Rajantie
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Abstract

Light scalar fields present during inflation can lead to interesting observable signatures, especially in models with non-equilibrium reheating dynamics. We study a supersymmetric hybrid inflation model with a third scalar whose lightness is protected by symmetry, using analytical and numerical techniques, and demonstrate that the amplitude, the spectral index and the non-Gaussianity parameter fNL of the primordial curvature perturbation are within the Planck observational bounds for suitable parameter values.

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Stefano Orani, Arttu Rajantie. 2013-04-30. Supersymmetric hybrid inflation with a light scalar. https://doi.org/10.1103/physrevd.88.043508

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