Gravitational Baryogenesis and Dark Matter from Light Black Holes
  We study a scenario in which the baryon asymmetry is created through Hawking
radiation from primordial black holes via a dynamically-generated chemical
potential. This mechanism can also be used to generate the observed dark matter
abundance, regardless of whether or not the black holes fully evaporate. In the
case that evaporation ceases, the observed dark matter abundance is generically
comprised of both relic black holes and an asymmetric dark matter component. We
show that this two-component dark matter scenario can simultaneously account
for the observed baryon asymmetry and the cosmological dark matter, a
possibility which evades constraints on either individual candidate.
