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arXiv · 1906.10193

The Super-Planckian Axion Strikes Back

Nayara Fonseca·Benedict von Harling·Leonardo de Lima·Camila S. Machado
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Abstract

We present a novel framework for obtaining large hierarchies in axion decay constants as well as trans-Planckian field excursions, with no need for tuning or a large number of fields. We consider a model with two or more CFTs with a common cutoff, that are linked by a gauged diagonal symmetry. This construction is dual to the geometry of a warped space with two or more throats glued at a common brane, allowing for calculability. Many applications of our setup are possible,such as ultra-light axions, natural inflation, and relaxion models.

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Nayara Fonseca, Benedict von Harling, Leonardo de Lima, Camila S. Machado. 2019-06-24. The Super-Planckian Axion Strikes Back. https://doi.org/10.1103/physrevd.100.105019

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