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Self-consistent random phase approximation within the O(5) model and Fermi transitions

Abstract : 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.
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http://hal.in2p3.fr/in2p3-00005065
Contributor : Lpsc Bibliotheque <>
Submitted on : Thursday, January 21, 1999 - 9:45:01 AM
Last modification on : Thursday, November 19, 2020 - 12:58:27 PM

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F. Krmpotic, E.J.V. De Passos, D.S. Delion, J. Dukelsky, P. Schuck. Self-consistent random phase approximation within the O(5) model and Fermi transitions. Nuclear Physics A, Elsevier, 1998, 637, pp.295-324. ⟨in2p3-00005065⟩

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