TY - JOUR
T1 - Coexistence of BCS- and BEC-like pair structures in Halo Nuclei
AU - Hagino, K.
AU - Sagawa, H.
AU - Carbonell, J.
AU - Schuck, P.
PY - 2007/7/13
Y1 - 2007/7/13
N2 - We investigate the spatial structure of the two-neutron wave function in the Borromean nucleus Li11, using a three-body model of Li9+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 Li9 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 Li11 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.
AB - We investigate the spatial structure of the two-neutron wave function in the Borromean nucleus Li11, using a three-body model of Li9+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 Li9 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 Li11 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.
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U2 - 10.1103/PhysRevLett.99.022506
DO - 10.1103/PhysRevLett.99.022506
M3 - Article
AN - SCOPUS:34547222512
VL - 99
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 2
M1 - 022506
ER -