Lecheheb, AMerad, MBoudjedaa, T2022-04-272022-04-272007http://hdl.handle.net/123456789/13019The propagator relating to the evolution of a particle on the D-sphere and the D-pseudosphere, subjected to the Coulomb potential, was reconsidered in the Faddeev–Senjanovic formalism. The mid-point is privileged. The space–time transformations used make it possible to regularize the singularity and to bring back the problem to its dynamical symmetry SU(1, 1)enArticle