3–7 Jun 2019
Kavli IPMU, Kashiwa, Japan
Asia/Tokyo timezone

Effects of an early matter dominated era on gravitational waves induced by scalar perturbations

4 Jun 2019, 14:30
15m
Kavli IPMU, Kashiwa, Japan

Kavli IPMU, Kashiwa, Japan

Kashiwa, Japan
JHW

Speaker

Keisuke Inomata

Description

We revisit the effects of an early matter dominated era on gravitational waves induced by scalar perturbations. We carefully take into account the evolution of the gravitational potential, source of the gravitational waves, around the transition from an early matter dominated era to the radiation dominated era. As a result, we find that the induced gravitational waves can be suppressed or enhanced depending on the timescales of the transition. This talk will be based on our papers, arXiv:1904.12878, 1904.12879.

Presentation materials