Abstract
Ground state shape coexistence with mixing is suggested in nuclei, based on empirical evidences. The claim is demonstrated by the investigation of deformation properties for 74Ge and 74Kr nuclei within the phenomenological Bohr-Mottelson model, having as input the experimental collective energy states, as well with Covariant Density Functional Theory based on microscopic structural information. The results of the two approaches are shown to be compatible in what concerns the presence of coexisting shapes in the ground state of the considered nuclei, while the mixing characteristics are deduced from the phenomenologically calculated collective states.
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