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Effect of resonant continuum on pairing correlations in the relativistic approach
Cao LG(曹李刚); Cao, LG; Ma, ZY
2004
发表期刊EUROPEAN PHYSICAL JOURNAL A
卷号22期号:2页码:#REF!
通讯作者Cao, LG (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China.
摘要A proper treatment of the resonant continuum is to take account of not only the energy of the resonant state, but also its width. The effect of resonant states on pairing correlations is presented in the framework of the relativistic mean-field theory plus Bardeen-Cooper-Schrieffer (BCS) approximation with a constant pairing strength. The study is performed in an effective Lagrangian with the parameter set NU for neutron-rich even-even Ni isotopes. Results show that the contribution of the proper treatment of the resonant continuum to pairing correlations for those nuclei close to the neutron drip line is important. The pairing gaps, Fermi energies, pairing correlation energies, and binding energies are considerably affected by a proper consideration of the width of resonant states. The problem of unphysical particle gas, which may appear in the calculation of the traditional mean field plus BCS method for nuclei in the vicinity of the drip line could be well overcome when the pairing correlation is performed by using the resonant states instead of the discretized states in the continuum.
文章类型Article
学科领域Physics
DOI10.1140/epja/i2004-10029-5
收录类别SCI
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000225820800005
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226801
专题理论物理室
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Cao LG,Cao, LG,Ma, ZY. Effect of resonant continuum on pairing correlations in the relativistic approach[J]. EUROPEAN PHYSICAL JOURNAL A,2004,22(2):#REF!.
APA 曹李刚,Cao, LG,&Ma, ZY.(2004).Effect of resonant continuum on pairing correlations in the relativistic approach.EUROPEAN PHYSICAL JOURNAL A,22(2),#REF!.
MLA 曹李刚,et al."Effect of resonant continuum on pairing correlations in the relativistic approach".EUROPEAN PHYSICAL JOURNAL A 22.2(2004):#REF!.
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