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Complex shell model representation including antibound states
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.
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2005 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 72, no 5, 054322- p.Article in journal (Refereed) Published
Abstract [en]

A generalization of the complex shell model formalism is presented that includes antibound states in the basis. These states, together with bound states, Gamow states, and the continuum background, represented by properly chosen scattering waves, form a representation in which all states are treated on the same footing. Two-particle states are evaluated within this formalism, and observable two-particle resonances are defined. The formalism is illustrated in the well-known case of Li-11 in its bound ground state and in Ca-70(g.s.), which is also bound. Both cases are found to have a halo structure. These halo structures are described within the generalized complex shell model. We investigated the formation of two-particle resonances in these nuclei, but no evidence of such resonances was found.

Place, publisher, year, edition, pages
2005. Vol. 72, no 5, 054322- p.
Keyword [en]
nuclear-reactions, resonant states, li-11, continuum
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-15215DOI: 10.1103/PhysRevC.72.054322ISI: 000233607500030ScopusID: 2-s2.0-28844432345OAI: diva2:333256
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2010-08-20Bibliographically approved

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Id Betan, Rodolfo MLiotta, RobertoWyss, Ramon
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