Jul 12 – 16, 2021
Europe/Zurich timezone

Audible Axions from NANOGrav to the lattice

Jul 14, 2021, 3:05 PM


Pedro Klaus Schwaller


The dynamics of axions after inflation can give rise to an observable stochastic gravitational wave background. I will present new results for the GW spectrum from a lattice simulation of an axion-dark photon system in a radiation dominated universe, and furthermore show that this signal could explain the recently observed excess in the NANOGrav data.

Presentation materials