QCD axion dark matter and the cosmic dipole problem
arXiv:2211.06912 · doi:10.1103/PhysRevD.108.015026
Abstract
There is increasing evidence suggesting a discrepancy between the cosmic dipole observed in the number count of distant galaxies and the one derived from the cosmic microwave background (CMB). In this study, we investigate the possibility that the cosmic dipole problem can be addressed by considering the QCD axion, a hypothetical particle that arises from the spontaneous breaking of the Peccei-Quinn symmetry and is postulated to constitute the dark matter in our universe.
6 pages, 3 figures, version accepted by PRD
References in corpus (8)
- Is the Observable Universe Consistent with the Cosmological Principle?
- A Challenge to the Standard Cosmological Model
- Dipoles in the Sky
- Superhorizon Perturbations and the Cosmic Microwave Background
- Anomalies in Physical Cosmology
- A new way to test the Cosmological Principle: measuring our peculiar velocity and the large scale anisotropy independently
- The kinematic dipole in galaxy redshift surveys
- Dipole Cosmology: The Copernican Paradigm Beyond FLRW