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Aligned Natural Inflation: Monodromies of two Axions
classification
✦ hep-th
astro-ph.COhep-ph
keywords
alignedaxionsarxivinflationmechanismnaturalaccommodateaxion
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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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