Author(s): Juan Carlos Acosta Matos, P. Giannakeas, and Jan M. Rost We develop a self-consistent approach that provides an explicit potential for a Rydberg electron whose ionic core consists of a polarizable medium, typically realized with superfluid droplets. The electron’s motion remains separable in spherical coordinates, but the radial force exerted by the dropl… [Phys. Rev. Lett. 137, 123402] Published Wed Sep 16, 2026