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ITP OpenIR  > 理论物理所2011年知识产出  > 期刊论文
题名: Art of spin decomposition
作者: Chen, XS ;  Sun, WM ;  Wang, F ;  Goldman, T
刊名: PHYSICAL REVIEW D
出版日期: 2011
卷号: 83, 期号:7, 页码:71901
关键词: NUCLEON
学科分类: Physics
通讯作者: Chen, XS (reprint author), Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China.
部门归属: [Chen, Xiang-Song] Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China; [Chen, Xiang-Song; Sun, Wei-Min; Wang, Fan] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Sun, Wei-Min; Wang, Fan] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China; [Sun, Wei-Min; Wang, Fan] Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China; [Goldman, T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
英文摘要: We analyze the problem of spin decomposition for an interacting system from a natural perspective of constructing angular-momentum eigenstates. We split, from the total angular-momentum operator, a proper part which can be separately conserved for a stationary state. This part commutes with the total Hamiltonian and thus specifies the quantum angular momentum. We first show how this can be done in a gauge-dependent way, by seeking a specific gauge in which part of the total angular-momentum operator vanishes identically. We then construct a gauge-invariant operator with the desired property. Our analysis clarifies what is the most pertinent choice among the various proposals for decomposing the nucleon spin. A similar analysis is performed for extracting a proper part from the total Hamiltonian to construct energy eigenstates.
资助者: National Science Foundation of China [10875082, 11035003]; U.S. DOE [DE-AC52-06NA25396]; China Education Department
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000289193800001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14375
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Chen, XS,Sun, WM,Wang, F,et al. Art of spin decomposition[J]. PHYSICAL REVIEW D,2011,83(7):71901.
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