開始日時	2020/09/29　11:00
終了日時	2020/09/29　12:00
講演者	Dr. Shi Pi　( Kavli IPMU )
会場	オンライン (zoom)
連絡先	---
言語	English
ウェブサイト

概要

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 from the nonlinear coupling of the scalar and tensor perturbations, as well as their connection to the primordial black holes. I will also talk about the properties of the spectrum shape of such waves: infrared scaling and the peak width.