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

Constraining the inflationary epoch is one of aims modern cosmology. In order to fully exploit current and future small-scale observations, it necessary devise tools directly relate them early Universe's dynamics. We present here a novel reverse engineering approach able connect fundamental late-time observables consistent dynamics and, eventually, inflaton potential. Employing this procedure, we are describe which conditions can give rise raised plateau in power spectrum curvature perturbations at small scales, not constrained by CMB observations. Within new phenomenologically driven approach, find that inflation generate potentially connects three observables; dominant component dark matter form asteroid-mass/atomic-size primordial black holes, detectable signals stochastic gravitational waves, subdominant fraction stellar-mass holes mergers.