Spin symmetry in the anti-nucleon spectrum

Details Spin symmetry in the anti-nucleon spectrum Spin symmetry in the anti-nucleon spectrum

2003-04-21

arxiv.org/abs/nucl-th/0304067v2

Phys.Rev.Lett. 91 (2003) 262501

Physics

Nuclear Physics

Nuclear Theory

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.91.262501

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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