SU(4) symmetry in the extended proton-neutron interacting boson model: multiplets and symmetry breaking

The manifestation of $SU(4)$ symmetry within an interacting boson model including particle-like and hole-like $\pi$- and $\nu$-bosons is shown for light nuclei around the Z=N=8 shell. We also present a consistent description of the particle-hole (intruder spin or $I$ spin) multiplets in the Extended...

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Detalles Bibliográficos
Autores principales: Decroix, B, De Beule, J, De Coster, C, Heyde, Kris L G
Lenguaje:eng
Publicado: 1998
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(98)01083-1
http://cds.cern.ch/record/370454
Descripción
Sumario:The manifestation of $SU(4)$ symmetry within an interacting boson model including particle-like and hole-like $\pi$- and $\nu$-bosons is shown for light nuclei around the Z=N=8 shell. We also present a consistent description of the particle-hole (intruder spin or $I$ spin) multiplets in the Extended Interacting Boson Model (EIBM) and of $\pi$-$\nu$ ($F$ spin) multiplets in the IBM-2 as a breaking of this $SU(4)$ symmetry.

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