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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...

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Detalles Bibliográficos
Autores principales: Choi, Gongjun, Schiappacasse, Enrico D.
Lenguaje:eng
Publicado: 2022
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1475-7516/2022/09/072
http://cds.cern.ch/record/2808832