Primordial Black Holes and a Common Origin of Baryons and Dark Matter

The origin of the baryon asymmetry Universe (BAU) and nature dark matter are two most challenging problems in cosmology. We propose a scenario which gravitational collapse large inhomogeneities at quark-hadron epoch generates both form primordial black holes (PBHs). This is due to sudden drop radiation pressure during transition from quark-gluon plasma non-relativistic hadrons. PBH induced by fluctuations light spectator scalar field rare regions accompanied violent expulsion surrounding material, might be regarded as sort “primordial supernova". acceleration protons relativistic speeds provides ingredients for efficient baryogenesis around collapsing its subsequent propagation rest Universe. naturally explains why observed BAU order fraction baryons have comparable densities. predicted mass distribution ranges subsolar several hundred solar masses. compatible with current observational constraints could explain rate, low spin hole mergers detected LIGO-Virgo. Future observations will soon able test this scenario.