Natural orbital description of the halo nucleus 6He
Abstract
Ab initio calculations of nuclei face the challenge of simultaneously describing the strong shortrange internucleon correlations and the longrange properties of weakly bound halo nucleons. Natural orbitals, which diagonalize the onebody density matrix, provide a basis which is better matched to the physical structure of the manybody wave function. We demonstrate that the use of natural orbitals significantly improves convergence for ab initio nocore configuration interaction calculations of the neutron halo nucleus 6He, relative to the traditional oscillator basis.
 Authors:

 Yale University, New Haven, CT (United States). Center for Theoretical Physics, Sloane Physics Laboratory; University of Notre Dame, Notre Dame, IN (United States). Department of Physics
 University of Notre Dame, Notre Dame, IN (United States). Department of Physics
 Iowa State University, Ames, IA (United States). Department of Physics and Astronomy
 Publication Date:
 Research Org.:
 Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Lawrence Berkeley National Laboratory, Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC).
 Sponsoring Org.:
 USDOE Office of Science (SC)
 OSTI Identifier:
 1461969
 Resource Type:
 Journal Article
 Journal Name:
 Nuclear Science and Techniques
 Additional Journal Information:
 Journal Volume: 28; Journal Issue: 12; Journal ID: ISSN 10018042
 Country of Publication:
 United States
 Language:
 English
Citation Formats
Constantinou, Chrysovalantis, Caprio, Mark A., Vary, James P., and Maris, Pieter. Natural orbital description of the halo nucleus 6He. United States: N. p., 2017.
Web. doi:10.1007/s4136501703326.
Constantinou, Chrysovalantis, Caprio, Mark A., Vary, James P., & Maris, Pieter. Natural orbital description of the halo nucleus 6He. United States. doi:10.1007/s4136501703326.
Constantinou, Chrysovalantis, Caprio, Mark A., Vary, James P., and Maris, Pieter. Tue .
"Natural orbital description of the halo nucleus 6He". United States. doi:10.1007/s4136501703326.
@article{osti_1461969,
title = {Natural orbital description of the halo nucleus 6He},
author = {Constantinou, Chrysovalantis and Caprio, Mark A. and Vary, James P. and Maris, Pieter},
abstractNote = {Ab initio calculations of nuclei face the challenge of simultaneously describing the strong shortrange internucleon correlations and the longrange properties of weakly bound halo nucleons. Natural orbitals, which diagonalize the onebody density matrix, provide a basis which is better matched to the physical structure of the manybody wave function. We demonstrate that the use of natural orbitals significantly improves convergence for ab initio nocore configuration interaction calculations of the neutron halo nucleus 6He, relative to the traditional oscillator basis.},
doi = {10.1007/s4136501703326},
journal = {Nuclear Science and Techniques},
issn = {10018042},
number = 12,
volume = 28,
place = {United States},
year = {2017},
month = {11}
}
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