Simple models for shell-model configuration densities

Details Simple models for shell-model configuration densities Simple models for shell-model configuration densities

2006-03-27

arxiv.org/abs/nucl-th/0603067v1

Phys.Rev. C74 (2006) 067302

Physics

Nuclear Physics

Nuclear Theory

8 pages, 3 figures

Scientific paper

10.1103/PhysRevC.74.067302

We consider the secular behavior of shell-model configuration (partial) densities. When configuration densities are characterized by their moments, one often finds large third moments, which can make suitable parameterization of the secular behavior problematic. We review several parameterizations or models, and consider in depth three specific models: Cornish-Fisher, binomial, and modified Breit-Wigner distributions. Of these three the modified Breit-Wigner provides the best secular approximation to exact numerical configuration densities computed via full diagonalization from realistic interactions.

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