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arXiv · 1404.7127

Aligned Natural Inflation: Monodromies of two Axions

Rolf Kappl·Sven Krippendorf·Hans Peter Nilles
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Abstract

Natural (axionic) inflation can accommodate sizeable primordial tensor modes but suffers from the necessity of trans-Planckian variations of the inflaton field. This problem can be solved via the mechanism of aligned axions arXiv:hep-ph/0409138, where the aligned axion spirals down in the potential of other axions. We elaborate on the mechanism in view of the recently reported observations of the BICEP2 collaboration arXiv:1403.3985.

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Rolf Kappl, Sven Krippendorf, Hans Peter Nilles. 2014-08-29. Aligned Natural Inflation: Monodromies of two Axions. https://doi.org/10.1016/j.physletb.2014.08.045

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