3 papers
hep-th2024
Records from the S-Matrix Marathon: Observables in Expanding Universes
Paolo Benincasa, Mathieu Giroux, Holmfridur S. Hannesdottir +3
Observables in expanding universes are crucial to understand the physics of the early universe. In these lectures, we review some recent progress in understanding their mathematica…
hep-th2024
On one-loop corrections to the Bunch-Davies wavefunction of the universe
Paolo Benincasa, Giacomo Brunello, Manoj K. Mandal +2
Understanding the loop corrections to cosmological observables is of paramount importance for having control on the quantum consistency of a theory in an expanding universe as well…
hep-th2024
Cosmological Infrared Subtractions & Infrared-Safe Computables
Paolo Benincasa, Francisco Vazão
Cosmological observables in perturbation theory turn out to be plagued with infrared divergences, which represents both a conceptual and computational challenge. In this paper we p…