スピーカー：寺田 隆広 (名古屋大)

タイトル：Probing the Early Universe with Induced Gravitational Waves

アブストラクト：
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 on PTAs and primordial black holes.