Equivalence between gamma instability and rigid triaxiality in finite boson systems

Oct 5, 1987
3 pages
Published in:
  • Phys.Rev.Lett. 59 (1987) 1541-1544

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Abstract: (APS)
It is shown, by use of the O(6) limit of the interacting-boson model, that the γ-unstable state can be generated from the rigid triaxial intrinsic state with γ=30°. This equivalence between the two descriptions holds under a certain condition on the number of bosons, which is satisfied in realistic cases. The β-γ deformation potential calculated from this triaxial intrinsic state has a minimum also at γ=30°, though quite shallow. The validity of the potential and the triaxial intrinsic state, which has been questioned because of the shallow minimum, is thus confirmed.
  • 21.60.Fw
  • 21.60.Ev