Angular Momentum Loss Due to Spin-Orbit Effects in the Post-Minkowskian Expansion

Author: Carlo Heissenberg Preprint number: UUITP-22/23 We calculate the spin-orbit corrections to the loss of angular momentum in a two-body scattering at third Post-Minkowskian order, O(G^3), from scattering amplitudes using the eikonal operator. These results include effects linear in spin, are valid for generic spin orientations and are presented in a manifestly Poincaré covariant way. We include both  radiative losses, by means of the leading-order gravitational waveform, and static losses by means of the appropriate -i0 prescription in the leading soft graviton theorem, finding agreement with known results in the Post-Newtonian limit.