Seminar detail: Probing the early Universe with gravitational waves -- topics on pulsar timing arrays and induced gravitational waves --

Date&Time	Tue Apr 30 2024 (17:00 - 18:00)
Speaker	Takahiro Terada
Affiliation	Nagoya Univ.
Title	Probing the early Universe with gravitational waves -- topics on pulsar timing arrays and induced gravitational waves --
Abstract	The detection of gravitational waves (GWs) by the LIGO-Virgo-KAGRA collaboration has opened a new era of GW astronomy, and the evidence of nanohertz GWs found by pulsar timing arrays (PTAs) may be the beginning of GW cosmology. Because of their feeble interactions, GWs emitted in the early Universe can reach us, so they may give us some information about the early Universe, in which new physics beyond the Standard Model of Particle Physics may be relevant. In this talk, we will focus on the secondary GWs induced by primordial curvature perturbations. We discuss their implications for PTAs and primordial black holes.
Remarks
Slide/Video