Speaker
Description
The formation of primordial black holes (PBHs) is intrinsically connected to the generation of scalar-induced gravitational waves (SIGWs). LISA will probe gravitational waves in the mHz band, corresponding to PBHs in the asteroid-mass range, providing a powerful avenue to constrain their role as dark matter candidates.
In this talk, we focus on scenarios featuring a transient ultra slow-roll (USR) phase during inflation, which can trigger PBH formation, assessing the compatibility of such models with CMB constraints and standard cosmological evolution. In particular, we evaluate their viability to generate signals in the LISA-sensitive range in light of the latest results from ACT and the Planck Collaboration, by performing an MCMC-assisted exploration of the parameter space.
This work is based on Refs.~[ArXiv:2510.18791, ArXiv:2412.14049].