Speaker
Lucile Cangemi
Description
In this talk, I’ll discuss how the dynamics of spinning sources are incorporated when computing post-Minkowskian (PM) observables within the quantum field theory framework. Our goal is to capture the dynamics of a Kerr black hole rather than a generic compact object. I will present our candidate tree-level amplitude for gravitational Compton scattering, fixed using tools from massive higher-spin quantum field theory. Using this as a building block, we compute the classical 2PM impulse and eikonal phase, obtaining new all-orders-in-spin results for certain contributions, and the remaining ones up to O(S^11). Since Kerr 2PM dynamics beyond O(S^5) remain unsettled, our results provide a useful reference point for future work.
