dorsal/arxiv
View SchemaCoexistence of BCS and BEC-like pair structures in halo nuclei
| Authors | K. Hagino, H. Sagawa, J. Carbonell, P. Schuck |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0611064 |
| URL | https://arxiv.org/abs/nucl-th/0611064 |
| DOI | 10.1103/PhysRevLett.99.022506 |
| Journal | Phys.Rev.Lett.99:022506,2007 |
Abstract
We 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.
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"abstract": "We investigate the spatial structure of the two-neutron wave function in the\nBorromean nucleus $^{11}$Li, using a three-body model of $^9$Li $+n+n$, which\nincludes many-body correlations stemming from the Pauli principle. The behavior\nof the neutron pair at different densities is simulated by calculating the\ntwo-neutron wave function at several distances between the core nucleus $^9$Li\nand the center of mass of the two neutrons. With this representation, a strong\nconcentration of the neutron pair on the nuclear surface is for the first time\nquantitatively established for neutron-rich nuclei. That is, the neutron pair\nwave function in $^{11}$Li has an oscillatory behavior at normal density, while\nit becomes a well localized single peak in the dilute density region around the\nnuclear surface. We point out that these features qualitatively correspond to\nthe BCS and BEC-like structures of the pair wave function found in infinite\nnuclear matter.",
"arxiv_id": "nucl-th/0611064",
"authors": [
"K. Hagino",
"H. Sagawa",
"J. Carbonell",
"P. Schuck"
],
"categories": [
"nucl-th",
"cond-mat.supr-con",
"nucl-ex"
],
"doi": "10.1103/PhysRevLett.99.022506",
"journal_ref": "Phys.Rev.Lett.99:022506,2007",
"title": "Coexistence of BCS and BEC-like pair structures in halo nuclei",
"url": "https://arxiv.org/abs/nucl-th/0611064"
},
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