The Faddeev technique is employed to study the influence of both particle-particle and particle-hole phonons on the one-hole spectral function of 16O. Collective excitations are accounted for at a random phase approximation level and subsequently summed to all orders by the Faddeev equations to obtain the nucleon self-energy. An iterative procedure is applied to investigate the effects of the self-consistent inclusion of the fragmentation in the determination of the phonons and the corresponding self-energy. The present results indicate that the characteristics of hole fragmentation are related to the low-lying states of 16O.

Faddeev treatment of long-range correlations and the one-hole spectral function of O-16 / C. Barbieri, W.H. Dickhoff, W.H. Dickhoff. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - 65:6(2002), pp. 064313.1-064313.10.

Faddeev treatment of long-range correlations and the one-hole spectral function of O-16

C. Barbieri;
2002

Abstract

The Faddeev technique is employed to study the influence of both particle-particle and particle-hole phonons on the one-hole spectral function of 16O. Collective excitations are accounted for at a random phase approximation level and subsequently summed to all orders by the Faddeev equations to obtain the nucleon self-energy. An iterative procedure is applied to investigate the effects of the self-consistent inclusion of the fragmentation in the determination of the phonons and the corresponding self-energy. The present results indicate that the characteristics of hole fragmentation are related to the low-lying states of 16O.
nucleon knock-out; spectroscopic factors; finite nuclei; O-16(E,E’P); strenght; states; approximation; N-15
Settore FIS/04 - Fisica Nucleare e Subnucleare
2002
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/724087
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