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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…
Finite parts of inflationary loops
Guillermo Ballesteros, Jesús Gambín Egea, Flavio Riccardi
We present a method for solving loop integrals in dimensional regularization that is particularly useful in the context of inflation. We apply this method to the calculation of the…
One-loop power spectrum in ultra slow-roll inflation and implications for primordial black hole dark matter
Guillermo Ballesteros, Jesús Gambín Egea
We apply the in-in formalism to address the question of whether the size of the one-loop spectrum of curvature fluctuations in ultra-slow-roll inflation models designed for produci…