Self-consistent mean-field (MF) and beyond-mean-field (BMF) calculations of masses, separation energies, and $2_1^{+}$ excitation energies of even-even nuclei where experimental data is available are presented. The functionals used are based on the Gogny D1S and D1M parametrizations and the method includes BMF corrections coming from both axial quadrupole shape mixing and symmetry restorations without assuming Gaussian overlap approximations. A comparison between MF and BMF approaches and the experimental data is provided. Additionally, the convergence of the results and the possible reduction of the magic shell gaps by including BMF effects are also discussed.

• Received 29 July 2014
• Revised 17 March 2015

DOI:https://doi.org/10.1103/PhysRevC.91.044315