Beyond mean field calculations with effective interactions have become very powerful techniques to study the structure of nuclei along the whole nuclear chart. These methods have been successfully applied to describe many phenomena such as the shell closures and shell quenching in exotic nuclei, shape coexistence or possible phase-shape transitions, among others. In this talk some recent results obtained with the Gogny force will be presented. I will focus on discussing the anomalous behaviour of the first 2+ excitation energies in Cd isotopes near the N = 82 magic number. Furthermore, I will discuss the spherical to prolate shape transitions which occur in the N ~ 90 region (Nd-Sm-Gd) and the connection between the experimental results, microscopic calculations and geometrical models.
Dpto Física Teórica C-XI, Universidad Autónoma de Madrid