Partial dynamical SU(3) symmetry and the nature of the lowest K=0 collective excitation in deformed nuclei

A. Leviatan*, I. Sinai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

We discuss the implications of partial dynamical SU(3) symmetry (PDS) for the structure of the lowest K =0+ (K=02) collective excitation in deformed nuclei. We consider an interacting boson model Hamiltonian whose ground and γ bands have good SU(3) symmetry, while the K=02 band is mixed. It is shown that the double-phonon components in the K=02 wave function arise from SU(3) admixtures which, in turn, can be determined from absolute E2 rates connecting the K=02 and ground bands. An explicit expression is derived for these admixtures in terms of the ratio of K=02 and γ bandhead energies. The SU(3) PDS predictions are compared with existing data and with broken-SU(3) calculations for 168Er.

Original languageAmerican English
Article number061301
Pages (from-to)613011-613015
Number of pages5
JournalPhysical Review C - Nuclear Physics
Volume60
Issue number6
DOIs
StatePublished - Dec 1999

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