Speaker
Pierre Vanhove
(Institut de Physique Théorique - CEA/Saclay)
Description
We present a streamlined approach to evaluating classical observables in gravitational two-body scattering using the exponential representation of the scattering matrix. This method leverages the KMOC description of observables, where the classical contribution boils down to a simple matrix element of an operator. In the conservative sector, this operator corresponds to the radial action. We will further demonstrate how this framework, combined with the velocity cut formalism, allows for efficient calculation of classical observables within the post-Minkowskian expansion.
Author
Pierre Vanhove
(Institut de Physique Théorique - CEA/Saclay)
