Truncation Method for the Shell Model Calculation

Details Truncation Method for the Shell Model Calculation Truncation Method for the Shell Model Calculation

1994-06-02

arxiv.org/abs/nucl-th/9406004v1

Phys.Rev.C50:2274-2277,1994

Physics

Nuclear Physics

Nuclear Theory

RevTex, 8 pages, 4 figures (the postscript file containing the figures, f1_4tr.ps.Z, can be be found on the anonymous server

Scientific paper

10.1103/PhysRevC.50.R2274

A method of truncating the large shell model basis is outlined. It relies on the order given by the unperturbed energies of the basis states and on the constancy of their spreading widths. Both quantities can be calculated by a simple averaging procedure. The method is tested in the sd shell where the JT dimensions are of the order of a few thousand. It proves to be very effective in the middle of the fp shell where JT dimensions of the order of a few million are truncated to a few thousand.

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