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arXiv · 1906.09260

Observables and amplitudes for spinning particles and black holes

Ben Maybee·Donal O'Connell·Justin Vines
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Abstract

We develop a general formalism for computing classical observables for relativistic scattering of spinning particles, directly from on-shell amplitudes. We then apply this formalism to minimally coupled Einstein-gravity amplitudes for the scattering of massive spin 1/2 and spin 1 particles with a massive scalar, constructed using the double copy. In doing so we reproduce recent results at first post-Minkowskian order for the scattering of spinning black holes, through quadrupolar order in the spin-multipole expansion.

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Ben Maybee, Donal O'Connell, Justin Vines. 2019-06-21. Observables and amplitudes for spinning particles and black holes. https://doi.org/10.1007/jhep12(2019)156

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