Spin symmetry in the antinucleon spectrum.
Spin symmetry in the antinucleon spectrum.
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DOI：
10.1103/physrevlett.91.262501
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发表时间：
2003-04
影响因子：
8.6
通讯作者：
Shan-Gui Zhou;Jie Meng;Jie Meng;P. Ring
中科院分区：
文献类型：
--
作者：
Shan-Gui Zhou;Jie Meng;Jie Meng;P. Ring
讨论了原子核中单核子和单反核子谱中的自旋和伪自旋对称性。作为一个例子，我们使用相对论平均场理论来研究单个反核子谱。我们发现在单反中子和单反质子谱中有很好的自旋对称性。自旋重态波函数的主要分量几乎相同。反粒子谱中的自旋对称性与粒子谱中的伪自旋对称性具有相同的起源。然而，反核谱中的自旋对称性比正常核单粒子谱中的伪自旋对称性发展得更好。
We discuss spin and pseudospin symmetry in the spectrum of single nucleons and single antinucleons in a nucleus. As an example we use relativistic mean field theory to investigate single antinucleon spectra. We find a very well developed spin symmetry in single antineutron and single antiproton spectra. The dominant components of the wave functions of the spin doublet are almost identical. This spin symmetry in antiparticle spectra and the pseudospin symmetry in particle spectra have the same origin. However, it turns out that the spin symmetry in antinucleon spectra is much better developed than the pseudospin symmetry in normal nuclear single particle spectra.