| Polarization effect on the spin symmetry for anti-Lambda spectrum in ^16O＋∧ system |
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| 引用本文： | 宋春艳,尧江明.Polarization effect on the spin symmetry for anti-Lambda spectrum in ^16O＋∧ system[J].中国物理 C,2010,34(9):1425-1427. |
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| 作者姓名： | 宋春艳 尧江明 |
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| 作者单位： | School of Phyics, and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China; School of Physical Science and Technology, Southwest University, Chongqing 400715, China |
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| 基金项目： | Supported by National Key Basic Research Programme of China （2007CB815000）; National Natural Science Foundation of China （10947013 10975008 10775004）; Southwest University Initial Research Foundation Grant to Doctor （No.SWU109011） |
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| 摘 要： | ^The polarization effect on the spin symmetry for anti-Lambda spectrum in 16 O＋Λ system has been studied in relativistic mean-field theory.The PK1 effective interaction is used for nucleon-meson couplings and G-parity symmetry with a reduction factor ξ = 0.3 is adopted for anti-Lambda-meson couplings.The energy differences between spin doublets in the anti-Lambda spectrum are around 0.10-0.73 MeV for p Λ state.The dominant components of the Dirac spinor for the anti-Lambda spin doublets are found to be near identical.It indicates that the spin symmetry is still well-conserved against the polarization effect from the valence antiLambda hyperon,which leads to a highly compressed cold nucleus with the central density up to 2 - 3 times of saturated density.
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| 关 键 词： | 自旋极化 极化效应 对称性 系统 相对论平均场理论 饱和密度 能量差 狄拉克 |
| 收稿时间： | 2010-2-9 |
Polarization effect on the spin symmetry for anti-Lambda spectrum in ^16O＋∧ system |
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| SONG Chun-Yan,YAO Jiang-Ming.Polarization effect on the spin symmetry for anti-Lambda spectrum in ^16O＋∧ system[J].High Energy Physics and Nuclear Physics,2010,34(9):1425-1427. |
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| Authors: | SONG Chun-Yan YAO Jiang-Ming |
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| Institution: | 1 School of Phyics,and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China ;2 School of Physical Science and Technology,Southwest University,Chongqing 400715,China) |
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| Abstract: | lambda and anti-lambda hypernuclei relativistic mean field spin symmetry |
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| Keywords: | lambda and anti-lambda hypernuclei relativistic mean field spin symmetry |
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