Production of Primordial Black Holes via Single Field Inflation and Observational Constraints

Understand

In a class of single field models of inflation, the idea of Primordial Black holes(PBHs) production is studied.

• In this case, the dynamics on small cosmological scales differs significantly from that of the large scales probed by the observations of cosmic microwave background(CMB).
• This difference becomes a virtue in producing correct physical ambiance for the seeds required to produce PBHs.
• Thus, once the perturbed scales renter the horizon of our Universe during the later epochs of radiation domination and subsequent matter domination, these seeds collapses to produce PBHs.