Primordial Black Hole Evaporation and Dark Matter Production: I. Solely Hawking radiation

Understand

Hawking evaporation of black holes in the early Universe is expected to copiously produce all kinds of particles, regardless of their charges under the Standard Model gauge group.

• For this reason, any fundamental particle, known or otherwise, could be produced during the black hole lifetime.
• This certainly includes dark matter (DM) particles.
• This paper improves upon previous calculations of DM production from primordial black holes (PBH) by consistently including the greybody factors, and by meticulously tracking a system of coupled Boltzmann equations.