Extended proton-neutron quasiparticle random-phase approximation in a boson expansion method

The proton-neutron quasiparticle random phase approximation (pn-QRPA) is extended to include next to leading order terms of the QRPA harmonic expansion. The procedure is tested for the case of a separable Hamiltonian in the SO(5) symmetry representation. The pn-QRPA equation of motion is solved by u...

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Guardado en:
Detalles Bibliográficos
Autores principales: Civitarese, Enrique Osvaldo, Montani, Fernando Fabián, Reboiro, Marta
Formato: Articulo
Lenguaje:Inglés
Publicado: 1999
Materias:
Física
Fermi transitions.
proton-neutron correlations
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/160188
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:The proton-neutron quasiparticle random phase approximation (pn-QRPA) is extended to include next to leading order terms of the QRPA harmonic expansion. The procedure is tested for the case of a separable Hamiltonian in the SO(5) symmetry representation. The pn-QRPA equation of motion is solved by using a boson expansion technique adapted to the treatment of proton-neutron correlations. The resulting wave functions are used to calculate the matrix elements of double-Fermi transitions.

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