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Journal Article

All Things Retarded: Radiation-Reaction in Worldline Quantum Field Theory

MPS-Authors
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Jakobsen,  Gustav Uhre
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons252876

Mogull,  Gustav
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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2207.00569.pdf
(Preprint), 746KB

JHEP10(2022)128.pdf
(Publisher version), 799KB

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Citation

Jakobsen, G. U., Mogull, G., Plefka, J., & Sauer, B. (2022). All Things Retarded: Radiation-Reaction in Worldline Quantum Field Theory. Journal of High Energy Physics, 2022(10): 128. doi:10.1007/JHEP10(2022)128.


Cite as: https://hdl.handle.net/21.11116/0000-000A-AD76-F
Abstract
We exhibit an initial-value formulation of the worldline quantum field theory




(WQFT) approach to the classical two-body problem in general relativity. We




show that the Schwinger-Keldysh (in-in) formalism leads to purely retarded




propagators in the evaluation of observables in the WQFT. Integration




technology for retarded master integrals is introduced at third




post-Minkowskian (3PM) order. As an application we compute the complete




radiation-reacted impulse and radiated four momentum for the scattering of two




non-spinning neutron stars including tidal effects at 3PM order, as well as the




leading (2PM) far-field gravitational waveform.