Asymmetric dark matter via spontaneous co-genesis
Asymmetric dark matter via spontaneous co-genesis
We investigate, in the context of asymmetric dark matter (DM), a new mechanism of spontaneous co-genesis of linked DM and baryon asymmetries, explaining the observed relation between the baryon and DM densities, ΩDM /ΩB ≃ 5. The co-genesis mechanism requires a light scalar field, ϕ, with mass below 5 eV …