The eikonal operator at arbitrary velocities I: the soft-radiation limit
The eikonal operator at arbitrary velocities I: the soft-radiation limit
A bstract Observables related to the real part of the gravitational eikonal, such as the deflection angle and time delay, have been found so far to have a smooth post-Minkowskian (PM) expansion whose validity extends from the non-relativistic to the most extreme ultra-relativistic (UR) regime, which smoothly connects with massless …