Abstract
We report on a shell-model study of nuclei with four valence nucleons in the 132Sn and 208Pb regions. This aims at investigating to what extent the striking similarity existing between the low-energy properties of 134Sb and 210Bi persists when adding a pair of identical particles. We employ realistic low-momentum effective interactions derived from the CD-Bonn nucleon-nucleon potential through use of the Vlow-k approach. The calculated results are in very good agreement with the available experimental data and emphasize the persistence of a close resemblance between the spectroscopy of the two regions when moving away from the one proton-one neutron systems.
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