Jian-Feng He - Gravitational Waves from a Gauge Field Non-minimally Coupled to Gravity

I will introduce our recent work 2409.08312. In this work, we investigated the influence of RFF coupling to the inflation model with an axion spectator and a Chern-Simons coupling. We find that such a coupling introduces a multiplicative factor to the tachyonic mass, which effectively enhances the amplitude of the gauge field modes. Produced GWs are expected to be observed by future space-based GW detectors.