期刊
PHYSICAL REVIEW D
卷 101, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.075031
关键词
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资金
- China Grant for Talent Scientific Start-Up Project
- JSPS [16H02176, 17H02878, 19H05810]
- World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan
- Grants-in-Aid for Scientific Research [19H05810, 17H02878, 16H02176] Funding Source: KAKEN
We present a dark sector model addressing both the Hubble tension and the core-cusp problem. The model is based on a hidden Abelian gauge symmetry group with some chiral fermions required by the anomaly cancellation conditions, producing a candidate for the decaying fermion dark matter as a solution to the Hubble tension. Moreover, the sub-keV mass regime and the thermal history of the dark sector help the dark matter candidate resolve the core-cusp problem occurring in the standard Lambda cold dark matter cosmology.
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