Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2004-04-10
Eur.Phys.J. A25 (2005) 569-570
Physics
Nuclear Physics
Nuclear Theory
8 pages, 6 figures, Proceedings of the Fifth Japan China Joint Nuclear Physics Symposium, March 7-10, 2004, Kyushu University,
Scientific paper
Important features of low-frequency collective vibrational excitations in neutron drip line nuclei are studied. We emphasize that pairing anti-halo effect in the Hartree-Fock-Bogoliubov (HFB) theory play crucial roles to realize collective motions in loosely bound nuclei. We study the spatial properties of one particle - one hole (1p-1h) states with/without selfconsistent pairing correlations by solving simplified HF(B) equations in coordinate space. Next, by performing Skyrme-HFB plus selfconsistent quasiparticle random phase approximation (QRPA) we investigate the first 2+ states in neutron rich Ni isotopes. Three types of calculations, HFB plus QRPA, resonant BCS plus QRPA, and RPA are compared.
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