QCD axion dark matter and the cosmic dipole problem
High Energy Physics - Phenomenology
2023-08-02 v5 Cosmology and Nongalactic Astrophysics
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.
Keywords
Cite
@article{arxiv.2211.06912,
title = {QCD axion dark matter and the cosmic dipole problem},
author = {Chengcheng Han},
journal= {arXiv preprint arXiv:2211.06912},
year = {2023}
}
Comments
6 pages, 3 figures, version accepted by PRD