Events

Date: 21 May 2026   Time: 14:00 - 15:00     

Location: Room 610, G.O. Jones Building

Title: Unexpected Symmetries of Kerr Black Hole Scattering

Abstract:

Recent years have seen considerable progress in computing scattering observables for spinning black holes at high PM orders, using both amplitude based and worldline methods. In this talk we will use these results to investigate the integrability properties of scattering Kerr black holes, both in the probe limit and beyond. We will begin by reviewing the radial action and the recently introduced Dirac bracket formalism, before applying them to define a notion of asymptotic integrability. Using these tools, we will show that this integrability holds to higher orders in spin than previously known. Finally, we will give a new perspective on spin shift symmetry and show how this can be combined with integrability constraints to help bootstrap the radial action.
This talk is based on 2508.10761.