Preprint
Oct 2026
Angular Momentum Loss at Fourth Post-Minkowskian Order
We calculate the total loss of angular momentum for a gravitational scattering of two non-spinning point-like objects at $\mathcal{O}(G^4)$. Our methodology combines use of both amplitudes and worldline-based methods. We derive the integrand from two copies of the gravitational waveform with cuts on massive lines arisi...
Alessandro Georgoudis, Carlo Heissenberg, Gustav Mogull et al.
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