Primordial black holes and dark matter mass spectra

Abstract Because primordial black holes (PBHs) evaporate into all particle species in nature, PBHs may emit several dark matter (DM) with specific mass spectra. We assume that are the only source of DMs, and DMs interact standard model particles gravitationally. show a relation between number DM NDM initial PBH density β $M_{\rm BH}^{\rm in}$. β–$M_{\rm in}$ curves for different tend to overlap each other heavy PBHs. also allowed region masses multiple DMs.