3 papers
hep-th2026
Classical and quantum evolution of inflationary fluctuations
Guillermo Ballesteros, Jesús Gambín Egea, Alejandro Pérez Rodríguez
We compare the correlation functions of inflationary perturbations computed either with quantum or classical dynamics. Even if they are enforced to agree at a specific time during…
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…
hep-th2024
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…