Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2018 Impact factor 0.961

Nuclear Science and Techniques ›› 2017, Vol. 28 ›› Issue (12): 179 doi: 10.1007/s41365-017-0332-6

Special Issue: Special Section on the Celebration of Prof. Nauowitz's 80th Birthday

• Special Section on the Celebration of Prof. Nauowitz's 80th Birthday • Previous Articles     Next Articles

Natural orbital description of the halo nucleus 6He

Chrysovalantis Constantinou 1,2 , Mark A. Caprio 2 , James P. Vary 3, Pieter Maris 3   

  1. 1 Present Address: Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, CT 06520-8120, USA
    2 Department of Physics, University of Notre Dame, Notre Dame, IN 46556-5670, USA
    3 Department of Physics and Astronomy, Iowa State University, Ames, IA 50011-3160, USA
  • Contact: James P. Vary E-mail:jvary@iastate.edu
  • Supported by:

    This material is based upon work supported by the US Department of Energy, Office of Science, under Award Numbers DE-FG02-95ER- 40934, DESC0008485 (SciDAC/NUCLEI), and DE-FG02- 87ER40371. This research used computational resources of the University of Notre Dame Center for Research Computing and of the National Energy Research Scientific Computing Center (NERSC), a US Department of Energy, Office of Science, user facility supported under Contract DE-AC02-05CH11231.

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Chrysovalantis Constantinou, Mark A. Caprio, James P. Vary, Pieter Maris. Natural orbital description of the halo nucleus 6He.Nuclear Science and Techniques, 2017, 28(12): 179     doi: 10.1007/s41365-017-0332-6

Abstract:

Ab initio calculations of nuclei face the challenge of simultaneously describing the strong short-range internucleon correlations and the long-range properties of weakly bound halo nucleons. Natural orbitals, which diagonalize the one-body density matrix, provide a basis which is better matched to the physical structure of the many-body wave function. We demonstrate that the use of natural orbitals significantly improves convergence for ab initio no-core configuration interaction calculations of the neutron halo nucleus 6He, relative to the traditional oscillator basis.

Key words: Neutron halo nucleus 6He, Nuclear structure, Nuclear theory