No time to derive: unraveling total time derivatives in in-in perturbation theory - Braglia, Matteo; Pinol, Lucas (The journal of high energy physics, 2024)
Keywords: Classical and Quantum Gravitation; Correlation; Cosmological models; Cosmology of Theories BSM; Derivatives; Early Universe Particle Physics; Elementary Particles; Equations of motion; Formalism; General Relativity and Quantum Cosmology; Hamiltonian functions; High Energy Physics - Theory; Integrals; Linear equations; Mathematical analysis; Nonlinear dynamics; Operators (mathematics); Perturbation theory; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; Scalars; String Theory; Tensors; Transformations (mathematics); Cosmology of Theories BSM; Cosmological models; Early Universe Particle Physics; boundary condition; time dependence; path integral; nonlinear; inflation; field equations: linear; phase space; Early universe particle physics; perturbation theory; Cosmological model; fluctuation: primordial; background; higher-order: 3; quantum state; transformation: canonical; kinetic; Hamiltonian; correlation function