Abstract.
Since the observation of gravitational waves from black hole mergers, many new analytical methods have been developed to describe the classical two-body problem in general relativity. In this talk, I will describe the post-Minkowskian expansion, which harnesses the computational power of modern scattering-amplitude methods. In particular, effective field theory and on-shell methods efficiently encode the dynamics of Kerr black holes. These methods allow us to perform high-precision computations and to expose a hidden simplicity in the dynamics of black holes. As an example, we compute the motion of a neutron star in a Kerr black hole background to high perturbative order.
(The slides will be available here)