Exact treatment of pairing correlations in Yb isotopes with covariant density functional theory  

作　　者：刘朗 赵鹏巍 

机构地区：[1]School of Science, Jiangnan University [2]State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University

出　　处：《Chinese Physics C》2014年第7期45-49,共5页中国物理C（英文版）

基　　金：Supported by"the Fundamental Research Funds for the Central Universities"(JUSRP1035);NSFC(11305077,11335002)

摘　　要：The effects of pairing correlation in Yb isotopes are investigated by covariant density functional theory with pairing correlations and blocking effects treated exactly by a shell model like approach （SLAP）. Experimental one- and two-neutron separation energies are reproduced quite well. The traditional BCS calculations always give larger pairing energies than those given by SLAP calculations, particularly for the nuclei near the proton and neutron drip lines. This may be caused because many of the single particle orbits above the Fermi surface are involved in the BCS calculations, but many of them are excluded in the SLAP calculations.The effects of pairing correlation in Yb isotopes are investigated by covariant density functional theory with pairing correlations and blocking effects treated exactly by a shell model like approach （SLAP）. Experimental one- and two-neutron separation energies are reproduced quite well. The traditional BCS calculations always give larger pairing energies than those given by SLAP calculations, particularly for the nuclei near the proton and neutron drip lines. This may be caused because many of the single particle orbits above the Fermi surface are involved in the BCS calculations, but many of them are excluded in the SLAP calculations.

关 键 词：pairing correlation Yb isotopes covariant density functional theory shell-model-like approach 

分 类 号：O571[理学—粒子物理与原子核物理]