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

Exact treatment of pairing correlations in Yb isotopes with covariant density functional theory
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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.
作者 刘朗 赵鹏巍 LIU Lang,ZHAO Peng-Wei(1.School of Science, Jiangnan University, Wuxi 214122, China;2.State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China)
出处 《中国物理C:英文版》 SCIE CAS CSCD 2014年第7期45-49,共5页 Chinese Physica C
基金 Supported by "the Fundamental Research Funds for the Central Universities" (JUSRP1035), NSFC (11305077, 11335002)
关键词 密度泛函理论 对关联 同位素 协变 治疗 阻断作用 粒子轨道 pairing correlation, Yb isotopes, covariant density functional theory, shell-model-like approach
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