SU(3) symmetry breaking in lower fp-shell nuclei

Details SU(3) symmetry breaking in lower fp-shell nuclei SU(3) symmetry breaking in lower fp-shell nuclei

2000-09-06

arxiv.org/abs/nucl-th/0009014v3

Phys.Rev. C63 (2001) 014318

Physics

Nuclear Physics

Nuclear Theory

Updated to the published version

Scientific paper

10.1103/PhysRevC.63.014318

Results of shell-model calculations for lower fp-shell nuclei show that SU(3) symmetry breaking in this region is driven by the single-particle spin-orbit splitting. However, even though states of the yrast band exhibit SU(3) symmetry breaking, the results also show that the yrast band B(E2) values are insensitive to this fragmentation of the SU(3) symmetry; specifically, the quadrupole collectivity as measured by B(E2) transition strengths between low lying members of the yrast band remain high even though SU(3) appears to be broken. Results for $^{44,46,48}Ti$ and $^{48}Cr$ using the Kuo-Brown-3 two-body interaction are given to illustrate these observations.

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