The Super-Planckian Axion Strikes Back

Understand

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.