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Background-independent one-loop renormalization of tensor and scalar primordial spectra
Guillermo Ballesteros, Jesús Gambín Egea, Flavio Riccardi
We present a background-independent renormalization framework for one-loop primordial spectra. We apply it to two observables: the scalar-induced tensor spectrum sourced by a minim…
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…
Finite parts of inflationary loops II: A streamlined UV in-in algorithm and distinguishable signatures
Guillermo Ballesteros, Jesús Gambín Egea, Flavio Riccardi
We introduce a streamlined method for evaluating in-in loop integrals using dimensional regularization for diagrams with an arbitrary number of external legs and vertices, which co…
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…