Coexistence of BCS- and BEC-Like Pair Structures in Halo Nuclei

K. Hagino, H. Sagawa, J. Carbonell, and P. Schuck
Phys. Rev. Lett. 99, 022506 – Published 13 July 2007

Abstract

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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  • Received 17 November 2006

DOI:https://doi.org/10.1103/PhysRevLett.99.022506

©2007 American Physical Society

Authors & Affiliations

K. Hagino1, H. Sagawa2, J. Carbonell3, and P. Schuck4,5

  • 1Department of Physics, Tohoku University, Sendai 980-8578, Japan
  • 2Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8560, Japan
  • 3Laboratoire de Physique Subatomique et de Cosmologie, F-38026 Grenoble Cedex, France
  • 4Institut de Physique Nucléaire, CNRS, UMR8608, Orsay F-91406, France
  • 5Université Paris-Sud, Orsay F-91505, France

Comments & Replies

Comment on “Coexistence of BCS- and BEC-Like Pair Structures in Halo Nuclei”

N. T. Zinner and A. S. Jensen
Phys. Rev. Lett. 101, 179201 (2008)

Hagino et al. Reply:

K. Hagino, H. Sagawa, J. Carbonell, and P. Schuck
Phys. Rev. Lett. 101, 179202 (2008)

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Vol. 99, Iss. 2 — 13 July 2007

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