October 26, 2020 at 14:15

Gravitational wave probes of new physics

What: Gravitational wave probes of new physics

When: October 26, 2020 at 14:15

Where: https://syddanskuni.zoom.us/j/66271887069

Who: Pedro Schwaller (Mainz)

I will give an overview on gravitational waves as probes of new physics in the early Universe. Then I will focus on specific hidden sector scenarios such as dark photons or axions, and discuss how they could be probed by future gravitational wave observations in pulsar timing arrays, space and ground based detectors. Finally I will show that the recent NANOGrav evidence for a stochastic GW background at nHz frequencies might be a first hint for a dark sector.