The Super-Planckian Axion Strikes Back

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.

arXiv comment5 pages + appendices, 1 figure

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Cited by in corpus (8)

• Probing Relativistic Axions from Transient Astrophysical Sources
• Cosmological Relaxation through the Dark Axion Portal
• Axion Periodicity and Coupling Quantization in the Presence of Mixing
• Global View of Axion Stars with (Nearly) Planck-Scale Decay Constants
• Large Star/Rose Extra Dimension with Small Leaves/Petals
• Axion scales and couplings with Stückelberg mixing
• Composite heavy axion-like dark matter
• Mixing Particle Production for Relaxion Mechanism