原子核反核子谱的自旋对称性

Spin Symmetry in Anti-nucleon Spectra in Atomic Nuclei

简要介绍原子核反核子谱的自旋对称性。通过分析包含标量势和矢量势的核子及反核子Dirac方程的性质,给出核子谱的赝自旋对称性和反核子谱的自旋对称性的起因。对于反核子双重态,除了它们的能量非常接近以外,它们的波函数也几乎严格地满足自旋对称性所要求的关系。

In this article, we briefly review the spin symmetry in the anti-nucleon spectra in nuclei. In the relativistic mean field theory, the scalar potential and the vector potential are almost equal to each other in amplitude but opposite in sign. This results in a 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.