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http://hdl.handle.net/2445/11009
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DC Field | Value | Language |
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dc.contributor.author | Vidaña Haro, Isaac | cat |
dc.contributor.author | Ramos Gómez, Àngels | cat |
dc.contributor.author | Polls Martí, Artur | cat |
dc.date.accessioned | 2010-01-29T10:15:14Z | - |
dc.date.available | 2010-01-29T10:15:14Z | - |
dc.date.issued | 2004 | cat |
dc.identifier.issn | 0556-2813 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/11009 | - |
dc.description.abstract | The $\ensuremath{\Lambda}\ensuremath{\Lambda}$ 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.extent | 5 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | cat |
dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.70.024306 | cat |
dc.relation.ispartof | Physical Review C, 2004, vol. 70, núm. 2, p. 024306-1-024306-5 | cat |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevC.70.024306 | - |
dc.rights | (c) The American Physical Society, 2004 | cat |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Estructura nuclear | cat |
dc.subject.classification | Mecànica estadística | cat |
dc.subject.other | Nuclear structure | eng |
dc.subject.other | Statistical mechanics | eng |
dc.title | Lambda Lambda bond energy from the Nijmegen potentials | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 520800 | cat |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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520800.pdf | 52.47 kB | Adobe PDF | View/Open |
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