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Black-hole scattering with general spin directions from minimal-coupling amplitudes

Abstract:
We study the link between classical scattering of spinning black holes and quantum amplitudes for massive spin- s particles. Generic spin orientations of the black holes are considered, allowing their spins to be deflected on par with their momenta. We rederive the spin-exponentiated structure of the relevant tree-level amplitude from minimal coupling to Einstein’s gravity, which in the s → ∞ limit generates the black holes’ complete series of spin-induced multipoles. The resulting scattering function is seen to encode in a simple way the known net changes in the black-hole momenta and spins at first post-Minkowskian order. We connect our findings to a rigorous framework developed elsewhere for computing such observables from amplitudes.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/physrevd.100.104024

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Sub department:
Mathematical Institute
Role:
Author
ORCID:
0000-0002-8321-5175
More by this author
Role:
Author
ORCID:
0000-0001-6471-5409


Publisher:
American Physical Society
Journal:
Physical Review D More from this journal
Volume:
100
Issue:
10
Article number:
104024
Publication date:
2019-11-12
Acceptance date:
2019-10-29
DOI:
EISSN:
2470-0029
ISSN:
2470-0010


Language:
English
Keywords:
Pubs id:
1136733
Local pid:
pubs:1136733
Deposit date:
2020-10-09

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