Articulo
Self-consistent random phase approximation within the O(5) model and Fermi transitions
Registro en:
issn:0375-9474
Autor
Krmpotic, Francisco
Passos, E. J. V. de
Delion, D. S.
Dukelsky, Jorge
Schuck, Peter
Institución
Resumen
Self-consistent quasiparticle random phase approximation (SCQRPA) is considered in application to the Fermi transitions within the O(5) model. It is demonstrated that SCQRPA improves on renormalized QRPA (RQRPA), a method that has recently become rather popular in this context. The analytical form of the SCQRPA vacuum is used to evaluate all the matrix elements. The SCQRPA results show a general trend similar to the exact solutions. The necessity to change the single particle basis beyond the transition point, and to include the proton-proton and neutron-neutron channels in the QRPA operator, in addition to the proton-neutron one, is pointed out. Facultad de Ciencias Exactas