Configuration interaction in symmetry-conserving covariant density functional theory

Abstract

A new method to calculate spectroscopic properties of deformed nuclei is proposed: configuration interaction on top of projected density functional theory (CI-PDFT). The general concept of this approach is discussed in the framework of covariant density functional theory and its validity is illustrated in an application to the yrast band of the nucleus Cr-54. It is found that the experimentally observed excitation energies for the yrast band in Cr-54 can be well reproduced. In contrast to conventional shell-model calculations, there is no core and only a relatively small number of configurations is sufficient for a satisfying description. No new parameters are necessary, because the effective interaction is derived from an universal density functional given in the literature.

7 pages, 3 figures, 1 table

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Cited by in corpus (3)

• Two quasiparticle wobbling in the even-even nucleus 130Ba
• Multi-chiral facets in symmetry restored states: Five chiral doublets candidates in even-even nucleus ${}^{136}$Nd
• Configuration interaction projected density functional theory: effects of four-quasiparticle configurations and time-odd interactions