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PBH assisted search for QCD axion dark matter
The entropy production prior to BBN era is one of ways to prevent QCD axion with the decay constant Fa ∈ [10$^{12}$ GeV, 10$^{16}$ GeV] from overclosing the universe when the misalignment angle is θ $_{i}$ = 𝒪(1). As such, it is necessarily accompanied by an early matter-dominated era (EMD) provided...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2022
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| Acceso en línea: | https://dx.doi.org/10.1088/1475-7516/2022/09/072 http://cds.cern.ch/record/2808832 |