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arXiv · 1203.4856

Generalized seniority for the shell model with realistic interactions

M. A. Caprio·F. Q. Luo·K. Cai·V. Hellemans·C. Constantinou
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Abstract

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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M. A. Caprio, F. Q. Luo, K. Cai, V. Hellemans, C. Constantinou. 2012-03-21. Generalized seniority for the shell model with realistic interactions. https://doi.org/10.1103/physrevc.85.034324

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