2017/11/10 by Andrés Luna, Isobel Nicholson, Donal O’Connell +2 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #Black hole (networking) #General relativity #Gravitation #Massless particle #Numerical relativity #Pulsars and Gravitational Waves Research #Scalar (mathematics) #Scattering amplitude #Schwarzschild radius #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1007/jhep03(2018)044
28 pages, 6 figures
arxiv created 2017/11/10 · openalex created_date 2017/11/17 · openalex publication_date 2018/03/01 · arxiv updated 2018/04/04 · openalex updated_date 2026/08/06
A bstract We explain how the lowest-order classical gravitational radiation produced during the inelastic scattering of two Schwarzschild black holes in General Relativity can be obtained from a tree scattering amplitude in gauge theory coupled to scalar fields. The gauge calculation is related to gravity through the double copy. We remove unwanted scalar forces which can occur in the double copy by introducing a massless scalar in the gauge theory, which is treated as a ghost in the link to gravity. We hope these methods are a step towards a direct application of the double copy at higher orders in classical perturbation theory, with the potential to greatly streamline gravity calculations for phenomenological applications.