Exploration of a modified density dependence in the Skyrme functional

Details Exploration of a modified density dependence in the Skyrme functional Exploration of a modified density dependence in the Skyrme functional

2010-09-03

arxiv.org/abs/1009.0624v1

Phys.Rev.C82:044307,2010

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1103/PhysRevC.82.044307

A variant of the basic Skyrme-Hartree-Fock (SHF) functional is considered dealing with a new form of density dependence. It employs only integer powers and thus will allow a more sound basis for projection schemes (particle number, angular momentum). We optimize the new functional with exactly the same adjustment strategy as used in an earlier study with a standard Skyrme functional. This allows direct comparisons of the performance of the new functional relative to the standard one. We discuss various observables: bulk properties of finite nuclei, nuclear matter, giant resonances, super-heavy elements, and energy systematics. The new functional performs at least as well as the standard one, but offers a wider range of applicability (e.g. for projection) and more flexibility in the regime of high densities.

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