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The European Physical Journal A 43 (2010) 369-378
New insights on pseudospin doublets in nuclei
B. Desplanques1, S. Marcos2

The relevance of the pseudospin symmetry in nuclei is considered. New insight is obtained from looking at the continuous transition from a model satisfying the spin symmetry to another one satisfying the pseudospin symmetry. This study suggests that there are models allowing no missing single-particle states in this transition, contrary to what is usually advocated. It rather points out to an association of pseudospin partners different from the one usually assumed, together with a strong violation of the corresponding symmetry. A comparison with results obtained from some relativistic approaches is made.
1 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
2 :  Departamento de Fisica Teorica
Physique/Physique Nucléaire Théorique
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