APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Mohammad Ali Gorji (U Barcelona)
Title: Primary tensor-induced stochastic gravitational waves
Date (JST): Thu, Jun 01, 2023, 14:00 - 15:00
Place: Hybrid
Abstract: Enhanced small-scale inflationary perturbations can produce stochastic gravitational waves which are detectable by future gravitational wave detectors. The dominant contribution to the gravitational waves is expected to be generated by the curvature perturbation leading to the so-called secondary scalar-induced gravitational waves scenarios. In this talk, I will argue that contributions from spectator fields which can provide extra tensor perturbations, on top of the metric tensor perturbations, can be comparable to the ones generated by the curvature perturbation.
[Based on arXiv:2302.14080]
Remarks: Venue: Seminar Room A and Zoom