3 citations · 3 across the 3 of their papers we have counts for
4 papers · 1 filter
Post-inflationary enhancement of adiabatic perturbations in modular cosmology
Rodrigo Gonzalez Quaglia, Martino Michelotti, Diederik Roest +3
We show that multi-field inflationary models with negligible turning in field space during inflation can lead to an effective sourcing of adiabatic from entropic perturbations {\it…
Kinetic Gauge Friction in Natural Inflation
Martino Michelotti, Rodrigo Gonzalez Quaglia, Ema Dimastrogiovanni +2
We study an extension of the natural inflation model comprising a non-Abelian gauge sector coupled to the axion-inflaton kinetic term. We show how such non-minimal coupling serves…
A universal constraint on axion non-Abelian dynamics during inflation
Ema Dimastrogiovanni, Matteo Fasiello, Martino Michelotti +1
Inflationary models equipped with Chern-Simons coupling between their axion and gauge sectors exhibit an array of interesting signals including a testable chiral gravitational wave…
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…