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.
arXiv comment6 pages, 3 figures, version accepted by PRD
References in corpus (30)
- The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
- Planck 2018 results. X. Constraints on inflation
- Axion Cosmology
- Planck 2018 results. I. Overview and the cosmological legacy of Planck
- The landscape of QCD axion models
- What galaxy surveys really measure
- Adiabatic Modes in Cosmology
- Axion Cosmology Revisited
- A Test of the Cosmological Principle with Quasars
- Is the Observable Universe Consistent with the Cosmological Principle?
- Toward Understanding CMB Anisotropies and Their Implications
- Cosmic radio dipole from NVSS and WENSS
- Large peculiar motion of the solar system from the dipole anisotropy in sky brightness due to distant radio sources
- A Challenge to the Standard Cosmological Model
- Dipoles in the Sky
- The CLASSgal code for Relativistic Cosmological Large Scale Structure
- Superhorizon Perturbations and the Cosmic Microwave Background
- The large-scale modulation of the density distribution in standard axionic CDM and its cosmological and physical impact
- Probing the Cosmological Principle in the counts of radio galaxies at different frequencies
- Revisiting the NVSS number count dipole
- The Cosmic Radio Dipole: Estimators and Frequency Dependence
- Anomalies in Physical Cosmology
- Must Cosmological Perturbations Remain Non-Adiabatic After Multi-Field Inflation?
- A new way to test the Cosmological Principle: measuring our peculiar velocity and the large scale anisotropy independently
- A large disparity in cosmic reference frames determined from the sky distributions of radio sources and the microwave background radiation
- Dipole Anisotropy from an Entropy Gradient
- The kinematic dipole in galaxy redshift surveys
- Dipole Cosmology: The Copernican Paradigm Beyond FLRW
- Hemispherical Power Asymmetry of the Cosmic Microwave Background from a Remnant of a pre-Inflationary Topological Defect
- Cosmic Microwave Background Dipole Asymmetry could be explained by Axion Monodromy Cosmic Strings