Double beta decay and the proton-neutron residual interaction

Abstract The validity of the pn-QRPA and -RQRPA descriptions of double beta decay transition amplitudes is analyzed by using an exactly solvable model. It is shown that the collapse of the QRPA is physically meaningful and that it is associated with the appearance of a state with zero energy in the...

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Detalles Bibliográficos
Autores principales: Hirsch, Jorge G., Hess, Peter O., Civitarese, Enrique Osvaldo
Formato: Articulo
Lenguaje:Inglés
Publicado: 1997
Materias:
Ciencias Exactas
Física
Physics
Neutron
Residual
Amplitude
Quantum electrodynamics
Collapse (topology)
Zero-point energy
Proton
Double beta decay
Spurious relationship
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/122688
https://www.sciencedirect.com/science/article/abs/pii/S0370269396015110?via%3Dihub#!
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:Abstract The validity of the pn-QRPA and -RQRPA descriptions of double beta decay transition amplitudes is analyzed by using an exactly solvable model. It is shown that the collapse of the QRPA is physically meaningful and that it is associated with the appearance of a state with zero energy in the spectrum. It is shown that in the RQRPA this particular feature is not present and that this approach leads to finite but otherwise spurious results for the double beta decay transition amplitudes near the point of collapse.

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