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Abstract:

One- and two-quasiparticle states are studied in the complex energy plane. It is found that the pairing interaction does not change the character of the complex state. If a normal state is a physically meaningful resonance, then it will remain as such throughout the shell and if it is unphysical it will also remain as such throughout the shell. An important consequence of this is that it justifies the use of bound representations to evaluate many-body systems within the shell-model in cases where the single-particle states are narrow resonances. The character of two-quasiparticle states may oscillate between meaningful resonances and unphysical complex excitations as the number of particles increases. © 2007 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:One- and two-quasiparticle states in the complex energy plane
Autor:Dussel, G.G.; Id Betan, R.; Liotta, R.J.; Vertse, T.
Filiación:Departamento de Física, FCEyN-UBA, Ciudad Universitaria, Pabellon 1, 1428 Buenos Aires, Argentina
Departamento de Química y Física, FCEIA, UNR - CONICET, Avenida Pellegrini 250, 2000 Rosario, Argentina
KTH, Alba Nova University Center, SE-10691 Stockholm, Sweden
Institute of Nuclear Research, the Hungarian Academy of Sciences, PO Box 51, H-4001 Debrecen, Hungary
University of Debrecen, Faculty of Informatics, PO Box 12, H-4010 Debrecen, Hungary
Palabras clave:Continuum; Quasiparticle resonances; Weakly-bound nuclei
Año:2007
Volumen:789
Número:1-4
Página de inicio:182
Página de fin:200
DOI: http://dx.doi.org/10.1016/j.nuclphysa.2007.04.005
Título revista:Nuclear Physics A
Título revista abreviado:Nucl. Phys. A
ISSN:03759474
CODEN:NUPAB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03759474_v789_n1-4_p182_Dussel

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Citas:

---------- APA ----------
Dussel, G.G., Id Betan, R., Liotta, R.J. & Vertse, T. (2007) . One- and two-quasiparticle states in the complex energy plane. Nuclear Physics A, 789(1-4), 182-200.
http://dx.doi.org/10.1016/j.nuclphysa.2007.04.005
---------- CHICAGO ----------
Dussel, G.G., Id Betan, R., Liotta, R.J., Vertse, T. "One- and two-quasiparticle states in the complex energy plane" . Nuclear Physics A 789, no. 1-4 (2007) : 182-200.
http://dx.doi.org/10.1016/j.nuclphysa.2007.04.005
---------- MLA ----------
Dussel, G.G., Id Betan, R., Liotta, R.J., Vertse, T. "One- and two-quasiparticle states in the complex energy plane" . Nuclear Physics A, vol. 789, no. 1-4, 2007, pp. 182-200.
http://dx.doi.org/10.1016/j.nuclphysa.2007.04.005
---------- VANCOUVER ----------
Dussel, G.G., Id Betan, R., Liotta, R.J., Vertse, T. One- and two-quasiparticle states in the complex energy plane. Nucl. Phys. A. 2007;789(1-4):182-200.
http://dx.doi.org/10.1016/j.nuclphysa.2007.04.005