The relation between KMOC and worldline formalisms for classical gravity
P.H. Damgaard, Elias Roos Hansen, Ludovic Planté, Pierre Vanhove
Abstract
A bstract We demonstrate the equivalence between observables in the KMOC and worldline formalisms for classical general relativity, highlighting the relation between the initial conditions in the two frameworks and how the Keldysh-Schwinger in-in formalism is contained in both of them even though the KMOC representation conventionally leads to the evaluation of scattering amplitudes with Feynman propagators. The relationship between the two approaches is illustrated in detail for the momentum kick at second Post-Minkowskian order.
Topics & Concepts
PhysicsRotation formalisms in three dimensionsMathematical physicsTheoretical physicsRelation (database)Classical mechanicsGeometryDatabaseMathematicsComputer sciencePulsars and Gravitational Waves ResearchGeophysics and Gravity MeasurementsCosmology and Gravitation Theories