Primordial Black Holes from the inflating curvaton

TL;DR

This paper investigates how the inflating curvaton model can produce primordial black holes across a wide mass range, showing that non-Gaussianity does not hinder their formation.

Contribution

It introduces a mechanism for PBH formation driven by the inflating curvaton, expanding the possible mass spectrum and addressing non-Gaussianity effects.

Findings

PBHs with masses from 10^{14}g to 10^{38}g can form during curvaton inflation.

The number of e-foldings influences the PBH mass scale.

Non-Gaussianity does not prevent PBH formation in this scenario.

Abstract

The primordial black hole (PBH) formation is studied in light of the inflating curvaton. The typical scale of the PBH formation is determined by curvaton inflation, which may generate PBH with $10^{14}\mathrm{g}\le M_\mathrm{PBH}\le 10^{38}\mathrm{g}$ when curvaton inflation gives the number of e-foldings $5\leq N_2\leq 38$. The non-Gaussianity of the inflating curvaton does not prevent the PBH formation.