Generalized seniority for the shell model with realistic interactions

Details Generalized seniority for the shell model with realistic interactions Generalized seniority for the shell model with realistic interactions

2012-03-21

arxiv.org/abs/1203.4856v1

Phys. Rev. C 85, 034324(2012)

Physics

Nuclear Physics

Nuclear Theory

13 pages, 8 figures; published in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.85.034324

The generalized seniority scheme has long been proposed as a means of dramatically reducing the dimensionality of nuclear shell model calculations, when strong pairing correlations are present. However, systematic benchmark calculations, comparing results obtained in a model space truncated according to generalized seniority with those obtained in the full shell model space, are required to assess the viability of this scheme. Here, a detailed comparison is carried out, for semimagic nuclei taken in a full major shell and with realistic interactions. The even-mass and odd-mass Ca isotopes are treated in the generalized seniority scheme, for generalized seniority v<=3. Results for level energies, orbital occupations, and electromagnetic observables are compared with those obtained in the full shell model space.

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