Speaker
Description
The search for gravitational waves has literally opened up a new window into
the universe, not the least as a means to probe new physics beyond the
standard model. In this talk I provide some examples, with a strong personal
bias, how this statement applies to a very broad range of frequencies.
The confirmed nHz cosmological background signal, is for example consistent
with a dark sector phase transition, and I will show how this interpretation
already constrains the properties of such a dark sector. A future signal at
frequencies accessible by LISA, in the mHz range, might not only evidence
such a dark sector phase transition, but correlate this with the thermal
production of dark matter in a secluded dark sector. Finally, there is growing
interest in exploring the technological feasibility of observing gravitational
waves with ultra-high frequencies, which would correspond to a smoking-gun
signature for new physics.
