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dc.contributor.author
Guevara, Alfredo
dc.contributor.author
Ochirov, Alexander
dc.contributor.author
Vines, Justin
dc.date.accessioned
2019-10-15T09:34:31Z
dc.date.available
2019-10-15T02:41:06Z
dc.date.available
2019-10-15T09:34:31Z
dc.date.issued
2019-09
dc.identifier.other
10.1007/JHEP09(2019)056
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/370487
dc.identifier.doi
10.3929/ethz-b-000370487
dc.description.abstract
We provide evidence that the classical scattering of two spinning black holes is controlled by the soft expansion of exchanged gravitons. We show how an exponentiation of Cachazo-Strominger soft factors, acting on massive higher-spin amplitudes, can be used to find spin contributions to the aligned-spin scattering angle, conjecturally extending previously known results to higher orders in spin at one-loop order. The extraction of the classical limit is accomplished via the on-shell leading-singularity method and using massive spinor-helicity variables. The three-point amplitude for arbitrary-spin massive particles minimally coupled to gravity is expressed in an exponential form, and in the infinite-spin limit it matches the effective stress-energy tensor of the linearized Kerr solution. A four-point gravitational Compton amplitude is obtained from an extrapolated soft theorem, equivalent to gluing two exponential three-point amplitudes, and becomes itself an exponential operator. The construction uses these amplitudes to: 1) recover the known tree-level scattering angle at all orders in spin, 2) recover the known one-loop linear-in-spin interaction, 3) match a previous conjectural expression for the one-loop scattering angle at quadratic order in spin, 4) propose new one-loop results through quartic order in spin. These connections link the computation of higher-multipole interactions to the study of deeper orders in the soft expansion.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Springer
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Scattering Amplitudes
en_US
dc.subject
Black Holes
en_US
dc.title
Scattering of spinning black holes from exponentiated soft factors
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2019-09-09
ethz.journal.title
Journal of High Energy Physics
ethz.journal.volume
2019
en_US
ethz.journal.issue
9
en_US
ethz.pages.start
56
en_US
ethz.size
38 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Berlin
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2019-10-15T02:41:12Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-10-15T09:34:43Z
ethz.rosetta.lastUpdated
2019-10-15T09:34:43Z
ethz.rosetta.exportRequired
true
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true
ethz.COinS
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