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Natural Milli-Charged Inflation
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Natural Milli-Charged Inflation
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We construct a natural inflation model with the inflaton as a linear combination of the fifth components of Abelian gauge fields in a five-dimensional theory. A seesaw mechanism is introduced to provide a natural milli-charge for matter fields under one combination of the gauge symmetries. As a result, the effective decay constant of the inflaton field can be above the Planck scale with all scales in the model below the Planck scale. Our model predicts a tensor-to-scalar ratio r between 0.033 and 0.125 for sixty e-folds and a reheating temperature of a few 10^11 GeV.
Forward citations
Cited by 1 Pith paper
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Extra-dimensional Origins of Chemical Potentials at the Cosmological Collider
A rolling 5D gauge-field inflaton acts as an extra-dimensional electric field, creating charged and neutral KK particles far heavier than H and yielding observable oscillatory signatures.
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