Nonrelativistic nucleon effective masses in nuclear matter: Brueckner-Hartree-Fock model versus relativistic Hartree-Fock model

doi:10.1103/PhysRevC.93.015803

	Nonrelativistic nucleon effective masses in nuclear matter: Brueckner-Hartree-Fock model versus relativistic Hartree-Fock model
	Li, A.1,2,3; Hu, J. N.4; Shang, X. L.3,5; Zuo, W.3,5
刊名	PHYSICAL REVIEW C
	2016-01-28
卷号	93 页码:6
ISSN号	2469-9985
DOI	10.1103/PhysRevC.93.015803
英文摘要	The density and isospin dependencies of nonrelativistic nucleon effective mass (m(N)) are studied, which is a measure of the nonlocality of the single particle (s.p.) potential. It can be decoupled as the so-called k mass (m(k), i.e., the nonlocality in space) and E mass (m(E), i.e., the nonlocality in time). Both k mass andE mass are determined and compared by using the latest versions of the nonrelativistic Brueckner-Hartree-Fock (BHF) model and the relativistic Hartree-Fock (RHF) model. The latter is achieved based on the corresponding Schrodinger equivalent s.p. potential in a relativistic framework. We demonstrate the origins of different effective masses and discuss also their neutron-proton splitting in the asymmetric matter in different models. We find that the neutron-proton splittings of both the k mass and the E mass have the same asymmetry dependencies at the densities considered; namely, m(k, n) > m(k, p)* and m(E, p)* > m(E, n). However, the resulting splittings of nucleon effective masses could have different asymmetry dependencies in these two models because they could be dominated either by the k mass (then we have m(n) > m(p)* in the BHF model), or by the E mass (then we have m(p)* > m(n)* in the RHF model). The isospin splitting in the BHF model is more consistent with the recent analysis from the nucleon-nucleus-scattering data, while the small E mass m(E)* in the RHF case as a result of the missing ladder summation finally leads to an opposite splitting behavior.
资助项目	National Natural Science Foundation of China[11347151] ; National Natural Science Foundation of China[11435014] ; National Natural Science Foundation of China[11405090] ; National Natural Science Foundation of China[11505241] ; National Natural Science Foundation of China[U1431107] ; Major State Basic Research Developing Program of China[2013CB834405] ; Knowledge Innovation Projects of the Chinese Academy of Sciences[KJCX2-EW-N01]
WOS关键词	NEUTRON-RICH NUCLEI ; NORMAL DENSITY ; 3-BODY FORCE ; MEAN-FIELD ; DEPENDENCE
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000369322800003
资助机构	National Natural Science Foundation of China ; Major State Basic Research Developing Program of China ; Knowledge Innovation Projects of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/41670]
专题	中国科学院近代物理研究所
通讯作者	Li, A.; Hu, J. N.; Shang, X. L.; Zuo, W.
作者单位	1.Xiamen Univ, Dept Astron, Xiamen 361005, Peoples R China 2.Xiamen Univ, Inst Theoret Phys & Astrophys, Xiamen 361005, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China 5.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Li, A.,Hu, J. N.,Shang, X. L.,et al. Nonrelativistic nucleon effective masses in nuclear matter: Brueckner-Hartree-Fock model versus relativistic Hartree-Fock model[J]. PHYSICAL REVIEW C,2016,93:6.
APA	Li, A.,Hu, J. N.,Shang, X. L.,&Zuo, W..(2016).Nonrelativistic nucleon effective masses in nuclear matter: Brueckner-Hartree-Fock model versus relativistic Hartree-Fock model.PHYSICAL REVIEW C,93,6.
MLA	Li, A.,et al."Nonrelativistic nucleon effective masses in nuclear matter: Brueckner-Hartree-Fock model versus relativistic Hartree-Fock model".PHYSICAL REVIEW C 93(2016):6.