Phys. Rev. C 62, 044311 (2000) [15 pages]Proton-neutron self-consistent quasiparticle random phase approximation within the O(5) modelReceived 22 March 2000; published 11 September 2000 The self-consistent quasiparticle random phase approximation (SCQRPA) within the O(5) model in the coupled proton-neutron representation is analyzed. The exact vacuum wave function is used to compute all involved matrix elements. A stability analysis of the stationary points is performed. A phase transition from the uncoupled to the coupled stable proton-neutron regime beyond the QRPA breakdown value of the particle-particle strength is evidenced. The excitation energies are close to the lowest stable exact eigenvalues given by the diagonalization procedure for all cases. The conditions for which the Ikeda sum rule is fulfilled for all values of the particle-particle strength are pointed out. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.62.044311
DOI:
10.1103/PhysRevC.62.044311
PACS:
21.60.Jz, 23.40.Hc, 23.90.+w
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.