Scattering Dynamics and Chaotic Motions in a Relativistic Two-Centre Problem

We study the planar relativistic two-centre problem at fixed energy, including a class of perturbations of the Keplerian potential.

Up to a reparametrisation of time, the relativistic dynamics is equivalent to a classical two-centre system with critical strong-force singularities.

This reduction allows us to apply variational methods based on the Maupertuis functional.

We construct collision-free relativistic trajectories with prescribed symbolic itineraries and obtain a coding of the dynamics by admissible sequences.

In particular, we prove the existence of bounded orbits, scattering solutions with prescribed asymptotic directions, and trapped trajectories that are asymptotically free in one time direction and exhibit prescribed symbolic behaviour in the other.