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题名: Quadrupole deformation (beta, gamma) of light Lambda hypernuclei in a constrained relativistic mean field model: Shape evolution and shape polarization effect of the Lambda hyperon
作者: Lu, BN ;  Zhao, EG ;  Zhou, SG
刊名: PHYSICAL REVIEW C
出版日期: 2011
卷号: 84, 期号:1, 页码:14328
关键词: HARTREE-BOGOLIUBOV THEORY ;  GROUND-STATE PROPERTIES ;  NUCLEAR-STRUCTURE ;  EXOTIC NUCLEI ;  FINITE NUCLEI ;  ISOTOPES ;  EQUATION ;  BINDING ;  ENERGY ;  DELTA
学科分类: Physics
通讯作者: Lu, BN (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Lu, Bing-Nan; Zhao, En-Guang; Zhou, Shan-Gui] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Zhao, En-Guang; Zhou, Shan-Gui] Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China; [Zhao, En-Guang] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
英文摘要: The shapes of light normal nuclei and Lambda hypernuclei are investigated in the (beta,gamma) deformation plane by using a newly developed constrained relativistic mean field (RMF) model. As examples, the results of some C, Mg, and Si nuclei are presented and discussed in details. We found that for normal nuclei the present RMF calculations and previous Skyrme-Hartree-Fock models predict similar trends of the shape evolution with the neutron number increasing. But some quantitative aspects from these two approaches, such as the depth of the minimum and the softness in the. direction, differ a lot for several nuclei. For Lambda hypernuclei, in most cases, the addition of a Lambda hyperon alters slightly the location of the ground state minimum toward the direction of smaller beta and softer gamma in the potential energy surface E similar to (beta,gamma). There are three exceptions, namely, (13)(Lambda)C, (23)(Lambda)C, and (31)(Lambda)Si in which the polarization effect of the additional Lambda is so strong that the shapes of these three hypernuclei are drastically different from their corresponding core nuclei.
资助者: NSFC [10875157, 10975100, 10979066]; MOST [2007CB815000]; CAS [KJCX2-EW-N01, KJCX2-SW-N17, KJCX2-YW-N32]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000293129700002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14314
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Recommended Citation:
Lu, BN,Zhao, EG,Zhou, SG. Quadrupole deformation (beta, gamma) of light Lambda hypernuclei in a constrained relativistic mean field model: Shape evolution and shape polarization effect of the Lambda hyperon[J]. PHYSICAL REVIEW C,2011,84(1):14328.
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