We investigate the cosmology of mini Primordial Black Holes (PBHs) produced by large density perturbations that collapse during a stiff fluid domination phase.Such a phase can be realized by a runaway-inflaton model that crosses an inflection point or a sharp feature at the last stage of inflation.Mini PBHs evaporate promptly and reheat the early Evening Primrose Oil/GLA universe.In addition, we examine two notable implications of this scenario: the possible presence of PBH evaporation remnants in galaxies and a non-zero residual potential energy density for the runaway inflaton that might play the role of the dark energy.
We specify the parameter space that this scenario can be realized and we find that a transit PBH domination phase is necessary due to gravitational wave (GW) constraints.A distinct prediction of the scenario is a compound GW signal that might be probed by current and future experiments.We Eye Primer also demonstrate our results employing an explicit inflation model.