The double copy: Bremsstrahlung and accelerating black holes

Luna, A., Monteiro, R., Nicholson, I., O’Connell, D. and White, C. D. (2016) The double copy: Bremsstrahlung and accelerating black holes. Journal of High Energy Physics, 2016(6), 23. (doi: 10.1007/jhep06(2016)023)

Abstract

Advances in our understanding of perturbation theory suggest the existence of a correspondence between classical general relativity and Yang-Mills theory. A concrete example of this correspondence, which is known as the double copy, was recently intro-duced for the case of stationary Kerr-Schild spacetimes. Building on this foundation, we examine the simple time-dependent case of an accelerating, radiating point source. The gravitational solution, which generalises the Schwarzschild solution, includes a non-trivial stress-energy tensor. This stress-energy tensor corresponds to a gauge theoretic current in the double copy. We interpret both of these sources as representing the radiative part of the field. Furthermore, in the simple example of Bremsstrahlung, we determine a scattering amplitude describing the radiation, maintaining the double copy throughout. Our results provide the strongest evidence yet that the classical double copy is directly related to the BCJ double copy for scattering amplitudes.

• Item Type: Articles
• Additional Information: CDW is supported by the U.K. Science and Technology Facilities Council (STFC) under grant ST/L000446/1.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Luna Godoy, Mr Andres and White, Dr Christopher
• Authors: Luna, A., Monteiro, R., Nicholson, I., O’Connell, D., and White, C. D.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Journal of High Energy Physics
• Publisher: Springer
• ISSN: 1029-8479
• ISSN (Online): 1029-8479
• Published Online: 06 June 2016
• Copyright Holders: Copyright © 2016 The Authors
• First Published: First published in Journal of High Energy Physics 2016(6): 23
• Publisher Policy: Reproduced under a Creative Commons license