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Nuclear symmetry energy in relativistic mean field theory
Ban, SF; Meng, J; Satula, W; Wyss, RA; Wyss, RA , AlbaNova Univ Ctr, Royal Inst Technol, S-10691 Stockholm, Sweden
2006
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号633期号:40942页码:231-236
摘要The physical origin of the nuclear symmetry energy is studied within the relativistic mean field (RMF) theory. Based on the nuclear binding energies calculated with and without mean isovector potential for several isobaric chains we confirm earlier Skyrme-Hartree-Fock result that the nuclear symmetry energy strength depends on the mean level spacing epsilon(A) and an effective mean isovector potential strength K(A). A detailed analysis of the isospin dependence of these two components contributing to the nuclear symmetry energy reveals a quadratic dependence due to the mean-isoscalar potential, similar to epsilon T-2, and, completely unexpectedly, the presence of a strong linear component similar to kappa T(T + 1 + epsilon/kappa) in the isovector potential. The latter generates a nuclear symmetry energy in RMF theory that is proportional to E-sym similar to T(T + 1) at variance to the non-relativistic calculation. The origin of the linear term in RMF theory needs to be further explored. (c) 2005 Elsevier B.V. All rights reserved.
部门归属AlbaNova Univ Ctr, Royal Inst Technol, S-10691 Stockholm, Sweden; Peking Univ, Sch Phys, Beijing 100871, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China; Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland
关键词Finite Nuclei Level Density Deformations Isospace Masses States Halo
学科领域Physics
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收录类别SCI
WOS记录号WOS:000235098500016
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被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/6045
专题理论物理所1978-2010年知识产出
通讯作者Wyss, RA , AlbaNova Univ Ctr, Royal Inst Technol, S-10691 Stockholm, Sweden
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GB/T 7714
Ban, SF,Meng, J,Satula, W,et al. Nuclear symmetry energy in relativistic mean field theory[J]. PHYSICS LETTERS B,2006,633(40942):231-236.
APA Ban, SF,Meng, J,Satula, W,Wyss, RA,&Wyss, RA , AlbaNova Univ Ctr, Royal Inst Technol, S-10691 Stockholm, Sweden.(2006).Nuclear symmetry energy in relativistic mean field theory.PHYSICS LETTERS B,633(40942),231-236.
MLA Ban, SF,et al."Nuclear symmetry energy in relativistic mean field theory".PHYSICS LETTERS B 633.40942(2006):231-236.
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