Natural orbital description of the halo nucleus 6He

  • Chrysovalantis Constantinou
  • Mark A. Caprio
  • James P. VaryEmail author
  • Pieter Maris


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.


Neutron halo nucleus 6He Nuclear structure Nuclear theory 



We thank G. Hupin for valuable discussions on the formulation of the nuclear natural orbital problem and M. A. McNanna for carrying out informative preliminary studies in one dimension.


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Copyright information

© Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Chinese Nuclear Society, Science Press China and Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  • Chrysovalantis Constantinou
    • 1
    • 2
  • Mark A. Caprio
    • 2
  • James P. Vary
    • 3
    Email author
  • Pieter Maris
    • 3
  1. 1.Center for Theoretical Physics, Sloane Physics LaboratoryYale UniversityNew HavenUSA
  2. 2.Department of PhysicsUniversity of Notre DameNotre DameUSA
  3. 3.Department of Physics and AstronomyIowa State UniversityAmesUSA

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