Pausader, BenoitWidmayer, Klaus Martin2021-06-142021-06-142021-06-142021-06-0910.1007/s00220-021-04117-8https://infoscience.epfl.ch/handle/20.500.14299/178847We consider the Vlasov–Poisson system with repulsive interactions. For initial data a small, radial, absolutely continuous perturbation of a point charge, we show that the solution is global and disperses to infinity via a modified scattering along trajectories of the linearized flow. This is done by an exact integration of the linearized equation, followed by the analysis of the perturbed Hamiltonian equation in action-angle coordinates.text::journal::journal article::research article