4 papers
Intrinsic non-Gaussianity of ultra slow-roll inflation
Guillermo Ballesteros, Jesús Gambín Egea, Thomas Konstandin +3
We study the non-Gaussian tail of the curvature fluctuation, , in an inflationary scenario with a transient ultra slow-roll phase that generates a localized large enhancement of…
Non-Gaussian tails without stochastic inflation
Guillermo Ballesteros, Thomas Konstandin, Alejandro Pérez Rodríguez +2
We show, both analytically and numerically, that non-Gaussian tails in the probability density function of curvature perturbations arise in ultra-slow-roll inflation from the …
The Waning of the WIMP: Endgame?
Giorgio Arcadi, David Cabo-Almeida, Maíra Dutra +7
Weakly Interacting Massive Particles (WIMPs) continue to be considered some of the best-motivated Dark Matter (DM) candidates. No conclusive signal, despite an extensive search pro…
Scalar dark matter production from the inflaton
Mathias Pierre
A curved space-time is known to act as a source for particle production in environments where gravity plays a significant role. We explore this effect in a minimal setup of cosmic…