Prospective constraints on the primordial black hole abundance from the stochastic gravitational-wave backgrounds produced by coalescing events and curvature perturbations

Sai Wang, Takahiro Terada, Kazunori Kohri

For a variety of on-going and planned gravitational-wave (GW) experiments, we study expected constraints on the fraction ($f_{\mathrm{PBH}}$) of primordial black holes (PBHs) in dark ma…