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Isospin dependence of nucleon effective mass in Dirac Brueckner-Hartree-Fock approach
Ma, ZY; Rong, J; Chen, BQ; Zhu, ZY(朱志远); Song, HQ(宋宏秋); Ma, ZY (reprint author), Inst Atom Energy, Beijing 102413, Peoples R China
2004
Source PublicationPHYSICS LETTERS B
ISSN0370-2693
Volume604Issue:40606Pages:170
AbstractThe isospin dependence of the nucleon effective mass is investigated in the framework of the Dirac Brueckner-Hartree-Fock (DBHF) approach. The definition of nucleon scalar and vector effective masses in the relativistic approach is clarified. Only the vector effective mass is the quantity related to the empirical value extracted from the analysis in the non-relativistic shell and optical potentials. In the relativistic mean field theory, where the nucleon scalar and vector potentials are both energy independent, the neutron vector potential is stronger than that of proton in the neutron-rich nuclear matter, which produces a smaller neutron vector effective mass than that of proton. It is pointed out that the energy dependence of nucleon potentials has to be considered in the analysis of the isospin dependence of the nucleon effective mass. In the DBHF the neutron vector effective mass is larger than that of proton once the energy dependence of nucleon potentials is considered. The results are consistent with the analysis of phenomenological isospin dependent optical potentials. (C) 2004 Elsevier B.V. All rights reserved.
KeywordNucleon Effective Mass Dirac Brueckner-hartree-fock Approach Neutron-rich Nuclear Matter
Subject AreaPhysics
Indexed Bysci
Language英语
Funding Project应物所项目组
WOS IDWOS:000225601900004
Citation statistics
Cited Times:48[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/8092
Collection中科院上海应用物理研究所2004-2010年
Corresponding AuthorMa, ZY (reprint author), Inst Atom Energy, Beijing 102413, Peoples R China
Recommended Citation
GB/T 7714
Ma, ZY,Rong, J,Chen, BQ,et al. Isospin dependence of nucleon effective mass in Dirac Brueckner-Hartree-Fock approach[J]. PHYSICS LETTERS B,2004,604(40606):170.
APA Ma, ZY,Rong, J,Chen, BQ,Zhu, ZY,Song, HQ,&Ma, ZY .(2004).Isospin dependence of nucleon effective mass in Dirac Brueckner-Hartree-Fock approach.PHYSICS LETTERS B,604(40606),170.
MLA Ma, ZY,et al."Isospin dependence of nucleon effective mass in Dirac Brueckner-Hartree-Fock approach".PHYSICS LETTERS B 604.40606(2004):170.
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