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New signature of a first order phase transition at the O(6) limit of the IBM

Bettermann, L.; Werner, V.; Williams, Elizabeth; Casperson, R.J.


Shape invariants within the interacting boson model are used to describe the ? deformation of the ground state and 02+ state along the ?-rigid leg of the extended Casten triangle between the symmetry limits SU(3) and SU(3)? via the O(6) limit. Similarly to the recently discovered ?-deformation crossing of the ground state with the 02+ state between the symmetry limits U(5) and SU(3), a crossing of those states with respect to the ? deformation is observed between SU(3) and SU(3)?. The newly...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Physical Review C: Nuclear Physics
DOI: 10.1103/PhysRevC.81.021303


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