73 citations · 266 across the 14 of their papers we have counts for
4 papers · 1 filter
Ultra-Slow-Roll Inflation on the Lattice I: Backreaction and Nonlinear Effects
Angelo Caravano, Gabriele Franciolini, Sébastien Renaux-Petel
Violating the slow-roll regime during the final stages of inflation can significantly enhance curvature perturbations, a scenario often invoked in models producing primordial black…
Parity-Odd Power Spectra: Concise Statistics for Cosmological Parity Violation
Drew Jamieson, Angelo Caravano, Jiamin Hou +2
We introduce the Parity-Odd Power (POP) spectra, a novel set of observables for probing parity violation in cosmological -point statistics. POP spectra are derived from composit…
Unveiling the nonlinear dynamics of a rolling axion during inflation
Angelo Caravano, Marco Peloso
A spectator axion-gauge sector, minimally coupled to the inflaton, with the axion experiencing a momentary stage of fast roll during cosmological inflation, can generate unique sig…
Inflationary Butterfly Effect: Non-perturbative Dynamics From Small-Scale Features
Angelo Caravano, Keisuke Inomata, Sébastien Renaux-Petel
For the first time, we investigate the non-perturbative dynamics of single field inflation with a departure from slow-roll. Using simulations, we find that oscillatory features in…