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astro-ph.CO2024
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…
astro-ph.CO2024
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 …