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Exact conservation and breaking of pseudospin symmetry in single particle resonant states

Abstracts

In this contribution we present some results on the study of pseudospin symmetry (PSS) in single particle resonant states. The PSS is a relativistic dynamical symmetry connected with the small component of the nucleon Dirac wave function. Many efforts have been made to study this symmetry in bound states. We recently gave a rigorous justification of the PSS in single particle resonant states by examining the zeros of Jost functions corresponding to the small components of the radial Dirac wave functions and phase shifts of continuum states [1]. We have shown that the PSS in single particle resonant states in nuclei is conserved when the attractive scalar and repulsive vector potentials have the same magnitude but opposite sign. Examples of exact conservation and breaking of this symmetry in single particle resonances are given for spherical square-well and Woods-Saxon potentials.
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Recommended references: Bing-Nan Lu,En-Guang Zhao,Shan-Gui Zhou.(2017).Exact conservation and breaking of pseudospin symmetry in single particle resonant states.[ChinaXiv:201707.00937] (Click&Copy)
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[V1] 2017-07-30 16:07:09 chinaXiv:201707.00937V1 Download
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