Quantization of perturbations during inflation in the 1+3 covariant formalism

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/188003This note derives the analogue of the Mukhanov-Sasaki variables both for scalar and tensor perturbations in the 1+3 covariant formalism. The possibility of generalizing them to non-flat Friedmann-Lemaitre universes is discussed.4 pages: v2 has minor changes to match published versionGeneral Relativity and Quantum CosmologyAstrophysicsQuantization of perturbations during inflation in the 1+3 covariant formalismtext