Implications of the cosmic birefringence measurement for the axion dark matter search
Ippei Obata
Abstract
Abstract We show that a recent constraint on the cosmic birefringence effect due to dark energy can be related to the constraints on the coupling of axion dark matter to photon, by relying on a simple model of two-axion alignment mechanism with periodic potentials. Owing to the alignment of the potentials, one linear combination of two fields provides a nearly flat direction and acts as dark energy, whereas the other combination provides a steep direction and acts as dark matter. This scenario solves the known conceptual issues of one-field model for dark energy and predicts the connection between seemingly disparate constraints on the dark sectors of our universe.
Topics & Concepts
PhysicsAxionDark matterCOSMIC cancer databaseDark energyCosmic microwave backgroundCosmologyBirefringenceAstrophysicsParticle physicsCosmic background radiationAstronomyAnisotropyOpticsDark Matter and Cosmic PhenomenaCosmology and Gravitation TheoriesParticle physics theoretical and experimental studies