Primordial Gravitational Waves in non-Minimally Coupled Chromo-Natural Inflation

Ema Dimastrogiovanni, Matteo Fasiello, Martino Michelotti +1

We consider inflation driven by an axion-like particle coupled to an SU(2) gauge sector via a Chern-Simons term. Known as chromo-natural inflation, this scenario is in tension with…