Classical Gravitational Bremsstrahlung from a Worldline Quantum Field Theory

Using the recently established formalism of a worldline quantum field theory description of the classical scattering of two spinless black holes, we compute the far-field time-domain waveform of the gravitational waves produced in the encounter at leading order in the post-Minkowskian (weak field bu...

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Bibliographic Details
Published in:Physical review letters 2021-05, Vol.126 (20), p.1-201103, Article 201103
Main Authors: Jakobsen, Gustav Uhre, Mogull, Gustav, Plefka, Jan, Steinhoff, Jan
Format: Article
Language:English
Subjects:
Angular momentum
Bremsstrahlung
Far fields
Field theory
Gravitational waves
Quantum field theory
Quantum theory
Waveforms
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Summary:Using the recently established formalism of a worldline quantum field theory description of the classical scattering of two spinless black holes, we compute the far-field time-domain waveform of the gravitational waves produced in the encounter at leading order in the post-Minkowskian (weak field but generic velocity) expansion. We reproduce the previous results of Kovacs and Thorne in a highly economic way. Then, using the waveform, we extract the leading-order total radiated angular momentum and energy (including differential results). Our work may enable crucial improvements of gravitational-wave predictions in the regime of large relative velocities.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.126.201103