ar X iv : n uc l - th / 9 61 10 15 v 1 7 N ov 1 99 6 Transition from the Seniority to the Anharmonic Vibrator Regime in Nuclei
نویسندگان
چکیده
A recent analysis of experimental energy systematics suggests that all collective nuclei fall into one of three classes – seniority, anharmonic vibrational, or rotational – with sharp phase transitions between them. We investigate the transition from the seniority to the anharmonic vibrator regime within a shell model framework involving a single large j–orbit. The calculations qualitatively reproduce the observed transitional behavior, both for U (5) like and O(6) like nuclei. They also confirm the preeminent role played by the neutron-proton interaction in producing the phase transition.
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