EXCITED-STATES IN METAL VOIDS

Based on a variational model, we obtain the spectra of excited states in metallic voids. Void plasmons are seen to have a peculiar behavior, concerning the radius of the cavity, which can be ascribed to a delay in the onset of collectivity. This is further demonstrated by the ele ctronic currents and transition densities obtained. One of the major f eatures of the developed method is that it enables us to describe arbi trarily large voids, up to the bulk limit.