A Cosmological Signature of the Standard Model Higgs Vacuum Instability:
  Primordial Black Holes as Dark Matter
  For the current central values of the Higgs and top masses, the Standard
Model Higgs potential develops an instability at a scale of the order of
$10^{11}$ GeV. We show that a cosmological signature of such instability could
be dark matter in the form of primordial black holes seeded by Higgs
fluctuations during inflation. The existence of dark matter might not require
physics beyond the Standard Model.
