http://arxiv.org/abs/1612.02529
Supersymmetric extensions of the standard model generically predict that in the early universe a scalar condensate can form and fragment into Q-balls before decaying. If the Q-balls dominate the energy density for some period of time, the relatively large fluctuations in their number density can lead to formation of primordial black holes (PBH). Other scalar fields, unrelated to supersymmetry, can play a similar role. For a general scalar field, this robust mechanism can generate black holes with masses from $10^{15}$g to $10^3 \text{ M}_\odot$, with a sufficient abundance to account for all dark matter. In the case of supersymmetry the mass range is limited from above by $10^{20}$g. We also comment on the role that topolgical defects can play for PBH formation in a similar fashion.
E. Cotner and A. Kusenko
Fri, 9 Dec 16
40/62
Comments: 5 pages, 4 figures
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