The Relation Between KMOC and Worldline Formalisms for Classical Gravity

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 rep...

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Detalles Bibliográficos
Autores principales: Damgaard, Poul H., Hansen, Elias Roos, Planté, Ludovic, Vanhove, Pierre
Lenguaje:eng
Publicado: 2023
Materias:
hep-ph
Particle Physics - Phenomenology
gr-qc
General Relativity and Cosmology
hep-th
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1007/JHEP09(2023)059
http://cds.cern.ch/record/2862583
Descripción
Sumario: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.

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