Primordial Black Holes from Long-Range Scalar Forces and Scalar Radiative Cooling.

@article{Flores2021PrimordialBH,
  title={Primordial Black Holes from Long-Range Scalar Forces and Scalar Radiative Cooling.},
  author={Marcos M. Flores and Alexander Kusenko},
  journal={Physical review letters},
  year={2021},
  volume={126 4},
  pages={
          041101
        }
}
We describe a new scenario for the formation of primordial black holes (PBHs). In the early Universe, the long-range forces mediated by the scalar fields can lead to formation of halos of heavy particles even during the radiation-dominated era. The same interactions result in the emission of scalar radiation from the motion and close encounters of particles in such halos. Radiative cooling due the scalar radiation allows the halos to collapse to black holes. We illustrate this scenario on a… 
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