期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
卷 24, 期 11, 页码 2060-2068出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217751X09045625
关键词
Nuclear correlations; spectroscopic factors; proton-neutron asymmetry
The self-consistent Green's functions method is employed to study the spectroscopic factors of quasiparticle states around O-16,O-28 and Ca-40,Ca-60. The Faddeev random phase approximation (FRPA) is used to account for the coupling of particles with collective excitation modes. Results for O-16 are reviewed first. The same approach is applied to isotopes with large proton-neutron asymmetry to estimate its effect on spectroscopic factors. The results, based on the chiral N3LO force, exhibit an asymmetry dependence similar to that observed in heavy-ion knockout experiments but weaker in magnitude.
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