Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/11009
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dc.contributor.authorVidaña Haro, Isaaccat
dc.contributor.authorRamos Gómez, Àngelscat
dc.contributor.authorPolls Martí, Arturcat
dc.date.accessioned2010-01-29T10:15:14Z-
dc.date.available2010-01-29T10:15:14Z-
dc.date.issued2004cat
dc.identifier.issn0556-2813cat
dc.identifier.urihttp://hdl.handle.net/2445/11009-
dc.description.abstractThe $\ensuremath{\Lambda}\ensuremath{\Lambda}$ bond energy $\ensuremath{\Delta}{B}_{\ensuremath{\Lambda}\ensuremath{\Lambda}}$ in $\ensuremath{\Lambda}\ensuremath{\Lambda}$ hypernuclei is obtained from a $G$-matrix calculation which includes the coupling between the $\ensuremath{\Lambda}\ensuremath{\Lambda}$, $\ensuremath{\Xi}N$, and $\ensuremath{\Sigma}\ensuremath{\Sigma}$ channels, as well as the effect of Pauli blocking to all orders. The Nijmegen NSC97e model is used as bare baryon-baryon interaction in the strangeness $S=\ensuremath{-}2$ sector. The $\ensuremath{\Lambda}\ensuremath{\Lambda}$-$\ensuremath{\Xi}N$ coupling increases substantially the bond energy with respect to the uncoupled $\ensuremath{\Lambda}\ensuremath{\Lambda}$ case. However, the additional incorporation of the $\ensuremath{\Sigma}\ensuremath{\Sigma}$ channel, which couples simultaneously to $\ensuremath{\Lambda}\ensuremath{\Lambda}$ and $\ensuremath{\Xi}N$ states, has a surprisingly drastic effect and reduces the bond energy down to a value closer to that obtained in an uncoupled calculation. We find that a complete treatment of Pauli blocking reduces the repulsive effect on the bond energy to about half of what was claimed before.-
dc.format.extent5 p.cat
dc.format.mimetypeapplication/pdfeng
dc.language.isoengeng
dc.publisherThe American Physical Societycat
dc.relation.isformatofReproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.70.024306cat
dc.relation.ispartofPhysical Review C, 2004, vol. 70, núm. 2, p. 024306-1-024306-5cat
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevC.70.024306-
dc.rights(c) The American Physical Society, 2004cat
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)-
dc.subject.classificationEstructura nuclearcat
dc.subject.classificationMecànica estadísticacat
dc.subject.otherNuclear structureeng
dc.subject.otherStatistical mechanicseng
dc.titleLambda Lambda bond energy from the Nijmegen potentialseng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.identifier.idgrec520800cat
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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