Coexistence of BCS and BEC-like pair structures in halo nuclei

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dc.creatorHagino, K.
dc.creatorSagawa, H.
dc.creatorCarbonell, J.
dc.creatorSchuck, P.
dc.date2006-11-17
dc.date2007-06-28
dc.date.accessioned2026-07-07T10:38:30Z
dc.date.available2026-07-07T10:38:30Z
dc.descriptionWe investigate the spatial structure of the two-neutron wave function in the Borromean nucleus $^{11}$Li, using a three-body model of $^9$Li $+n+n$, which includes many-body correlations stemming from the Pauli principle. The behavior of the neutron pair at different densities is simulated by calculating the two-neutron wave function at several distances between the core nucleus $^9$Li and the center of mass of the two neutrons. With this representation, a strong concentration of the neutron pair on the nuclear surface is for the first time quantitatively established for neutron-rich nuclei. That is, the neutron pair wave function in $^{11}$Li has an oscillatory behavior at normal density, while it becomes a well localized single peak in the dilute density region around the nuclear surface. We point out that these features qualitatively correspond to the BCS and BEC-like structures of the pair wave function found in infinite nuclear matter.
dc.description4 pages, 3 eps figures. The version to appear in PRL
dc.identifierhttps://arxiv.org/abs/nucl-th/0611064
dc.identifierhttp://arxiv.org/abs/nucl-th/0611064
dc.identifierPhys.Rev.Lett.99:022506,2007
dc.identifierdoi:10.1103/PhysRevLett.99.022506
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180742
dc.subjectNuclear Theory
dc.subjectSuperconductivity
dc.subjectNuclear Experiment
dc.titleCoexistence of BCS and BEC-like pair structures in halo nuclei
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