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Maximally misaligned axions

27 Aug 2021, 16:20
20m
ZR4

ZR4

Early Universe Cosmology Early Universe Cosmology

Speaker

Mario Reig (Instituto de Física Corpuscular (IFIC))

Description

In this talk I will discuss a simple model of maximal axion misalignment. Maximally-misaligned axions with masses larger than 10^{-22} eV constitute an attractive DM candidate with interesting phenomenology. On the other hand, maximally-misaligned axions with masses m=O(1-100)H_0 generically behave as dark energy with a decay constant that can take values well below the Planck scale, avoiding problems associated to super-Planckian scales.

Primary author

Mario Reig (Instituto de Física Corpuscular (IFIC))

Presentation materials