Speaker
Description
I will briefly review the recent progress in the non-Gaussian effect on the primordial black hole formation and the induced GWs. The most promising mechanism of generating PBHs is by the enhancement of the primordial curvature perturbation, which is usually accompanied by the enhancement of non-Gaussianity that crucially changes the abundance of PBHs. I will discuss how non-Gaussianity is generated in single field inflation as well as in the curvaton scenario, and then discuss how to calculate PBH mass function with such non-Gaussianities, which has mild effects on the induced gravitational waves (GWs). I will also talk about its implication on the scientific goal of the space-borne interferometer, and on the recently reported strong evidence of nHz GW signals.
