Isospin-dependent pairing interaction from nuclear matter calculations

被引：15
|
作者：
Zhang, S. S. [1 ,2 ,6 ]
Cao, L. G. [3 ,6 ]
Lombardo, U. [4 ,5 ,6 ]
Zhao, E. G. [2 ,6 ]
Zhou, S. G. [2 ,6 ]
机构：
[1] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China
[2] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[4] Univ Catania, I-95123 Catania, Italy
[5] LNS INFN, I-95123 Catania, Italy
[6] Kavli Inst Theoret Phys CAS, Beijing 100190, Peoples R China
来源：
PHYSICAL REVIEW C | 2010年 / 81卷 / 04期
基金：
中国国家自然科学基金;
关键词：
NEUTRON; SUPERFLUIDITY;
D O I：
10.1103/PhysRevC.81.044313
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The isospin dependence of the effective pairing interaction is discussed on the basis of the Bardeen, Cooper, and Schrieffer theory of superfluid asymmetric nuclear matter. It is shown that the energy gap, calculated within the mean field approximation in the range from symmetric nuclear matter to pure neutron matter, is not linearly dependent on the symmetry parameter owing to the nonlinear structure of the gap equation. Moreover, the construction of a zero-range effective pairing interaction compatible with the neutron and proton gaps in homogeneous matter is investigated, along with some recent proposals of isospin dependence tested on the nuclear data table.
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收藏
页数：5
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