Change search
ReferencesLink to record
Permanent link

Direct link
One- and two-quasiparticle states in the complex energy plane
KTH, School of Engineering Sciences (SCI), Physics.
2007 (English)In: Nuclear Physics A, ISSN 0375-9474, Vol. 789, 182-200 p.Article in journal (Refereed) Published
Abstract [en]

One- and two-quasi particle 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.

Place, publisher, year, edition, pages
2007. Vol. 789, 182-200 p.
Keyword [en]
continuum, quasiparticle resonances, weakly-bound nuclei
National Category
Subatomic Physics
URN: urn:nbn:se:kth:diva-37433DOI: 10.1016/j.nuclphysa.2007.04.005ISI: 000247627300015ScopusID: 2-s2.0-34249656304OAI: diva2:433950
QC 20110812Available from: 2011-08-12 Created: 2011-08-11 Last updated: 2011-08-12Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Liotta, Roberto
By organisation
In the same journal
Nuclear Physics A
Subatomic Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 18 hits
ReferencesLink to record
Permanent link

Direct link