Gravitational waves and classical scattering amplitudes

Gravitational waves are an exciting means for conducting precision tests of general relativity. For this, accurate theoretical predictions are neccesary. I will explain recently developed methods for the coputation of classical observables for either binary black holes or generic spinning compact objects. These results are used in the calibration of waveform models such as the effective one-body Hamiltonian. I will begin with a simple non-spining model and build up the formalism towards adding spin effects as in [2311.01430] and other upcoming work.