Energy Density Functional Approach to Superfluid Nuclei

We show that within the framework of a simple local nuclear energy density functional (EDF), one can describe accurately the one-- and two--neutron separation energies of the known tin and lead isotopes. We use for the normal part of the nuclear EDF the parameterization given by the Skyrme interaction SLy4 and alternatively the EDF suggested by Fayans, JETP Lett. 68, 169 (1998)