Scattering angles in Kerr metrics
P.H. Damgaard, Jitze Hoogeveen, Andrés Luna, Justin Vines
Abstract
Scattering angles for probes in Kerr metrics are derived for scattering in the equatorial plane of the black hole. We use a method that naturally resums all orders in the spin of the Kerr black hole, thus facilitating comparisons with scattering-angle computations based on the post-Minkowskian expansion from scattering amplitudes or worldline calculations. We extend these results to spinning black-hole probes up to and including second order in the probe spin and any order in the post-Minkowskian expansion for probe spins aligned with the Kerr spin. When truncating to third post-Minkowskian order, our results agree with those obtained by amplitude and worldline methods.
Topics & Concepts
ScatteringPhysicsScattering amplitudeSpinsRotating black holeSpin (aerodynamics)AmplitudePlane (geometry)Black hole (networking)Quantum electrodynamicsComputational physicsQuantum mechanicsAngular momentumCondensed matter physicsGeometryMathematicsComputer scienceThermodynamicsRouting protocolRouting (electronic design automation)Computer networkLink-state routing protocolPulsars and Gravitational Waves ResearchAstrophysical Phenomena and ObservationsParticle Accelerators and Free-Electron Lasers