Primordial black hole dark matter from inflation: the reverse engineering approach

Understand

Constraining the inflationary epoch is one of the aims of modern cosmology.

• In order to fully exploit current and future small-scale observations, it is necessary to devise tools to directly relate them to the early universes dynamics.
• We present here a novel reverse engineer approach able to connect fundamental late-time observables to consistent inflationary dynamics and, eventually, to the inflaton potential.
• Employing this procedure, we are able to describe which conditions can give rise to a raised plateau in the power spectrum of curvature perturbations at small scales, which are not constrained by CMB observations.