Speaker
Hardi Veermäe
(National Institute of Chemical Physics and Biophysics (EE))
Description
Primordial black holes (PBHs) can be tested through various gravitational wave signatures. In this talk I will focus on PBHs formed from critical collapse of large curvature perturbations from single-field inflation and curvaton models, and review the role non-Gaussianity plays for PBHs and the scalar-induced gravitational waves (SIGWs) associated with their formation. Since non-Gaussian effects can be strong in such scenarios, I will show how non-Gaussianity can be a limiting factor for future GW experiments such as LISA when probing asteroid-mass PBHs through their SIGW signatures, and discuss how to go beyond conventional perturbative approaches when dealing with strongly non-Gaussian fluctuations.
Authors
Antonio Junior Iovino
Gabriele Perna
Hardi Veermäe
(National Institute of Chemical Physics and Biophysics (EE))