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Spin symmetry in the anti-nucleon spectrum

Shan-Gui Zhou·Jie Meng·P. Ring
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Abstract

We discuss spin and pseudo-spin symmetry in the spectrum of single nucleons and single anti-nucleons in a nucleus. As an example we use relativistic mean field theory to investigate single anti-nucleon spectra. We find a very well developed spin symmetry in single anti-neutron and single anti-proton spectra. The dominant components of the wave functions of the spin doublet are almost identical. This spin symmetry in anti-particle spectra and the pseudo-spin symmetry in particle spectra have the same origin. However it turns out that the spin symmetry in anti-nucleon spectra is much better developed than the pseudo-spin symmetry in normal nuclear single particle spectra.

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Shan-Gui Zhou, Jie Meng, P. Ring. 2003-07-03. Spin symmetry in the anti-nucleon spectrum. https://doi.org/10.1103/physrevlett.91.262501

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