2 papers
astro-ph.CO2026
Pure Natural Inflation Passes the ACT
Cristóbal Zenteno Gatica, Alexandros Papageorgiou, Matteo Fasiello
Pure natural inflation is a compelling effectively single-field model of inflation stemming from a top-down approach to the acceleration mechanism. In this short letter we show tha…
astro-ph.CO2025
Pure Chromo-Natural Inflation: Signatures of Particle Production from Weak to Strong Backreaction
Ema Dimastrogiovanni, Matteo Fasiello, Alexandros Papageorgiou +1
We consider, in the context of axion-inflation, the \textit{Pure Natural Inflation} (PNI) model coupled with an SU(2) gauge sector via a Chern-Simons term. As the axion rolls down…