Unveiling the origin of shape coexistence in lead isotopes

Abstract

The shape coexistence in the nuclei ${}^{182-192}$Pb is analyzed within the Hartree-Fock-Bogoliubov approach with the effective Gogny force. A good agreement with the experimental energies is found for the coexisting spherical, oblate and prolate states. Contrary to the established interpretation, it is found that the low-lying prolate and oblate $0^{+}$ states observed in this mass region are predominantly characterized by neutron correlations whereas the protons behave as spectators rather than playing an active role.

5 pages, 6 postscript figures

References in corpus (3)

• Shape Coexistence in Pb186: Beyond-mean-field description by configuration mixing of symmetry restored wave functions
• Shape Coexistence in the Relativistic Hartree-Bogoliubov approach
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