Gravitational scattering, post-Minkowskian approximation, and effective-one-body theory
Gravitational scattering, post-Minkowskian approximation, and effective-one-body theory
A novel approach to the effective-one-body description of gravitationally interacting two-body systems is introduced. This approach is based on the post-Minkowskian approximation scheme (perturbation theory in $G$, without assuming small velocities) and employs a new dictionary focussing on the functional dependence of the scattering angle on the total energy and …