Ionization of hydrogen and hydrogenic ions by antiprotons

Presented here is a description of the ionization of hydrogen and hydrogenic ions by antiproton impact, based on very large scale numerical solutions of the time-dependent Schr{umlt o}dinger equation in three spatial dimensions and on analysis of the topology of the electronic eigenenergy surfaces in the plane of complex internuclear distance. Comparison is made with other theories and very recent measurements. {copyright} {ital 1996 The American Physical Society.}