Speaker
Dr
Shi Pi
(IPMU, Tokyo University)
Description
Our universe is fulfilled by stochastic background of gravitational waves with a large range of frequencies, which may have various astrophysical/cosmological origins in the early universe. As our universe is transparent to gravitational wave, it is a fossil recording the information of its generation and how our universe evolves. In this talk I will briefly review the stochastic background of the gravitational waves, especially the secondary gravitational waves induced by scalar perturbations and their connection to the primordial black holes as dark matter. I will also introduce our recent work on the shapes of the spectrum: infrared scaling and the peak.
