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arXiv · 1605.04976

Natural orbital description of the halo nucleus 6He

Ch. Constantinou·M. A. Caprio·J. P. Vary·P. Maris
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Abstract

Ab initio calculations of nuclei face the challenge of simultaneously describing 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.

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Ch. Constantinou, M. A. Caprio, J. P. Vary, P. Maris. 2016-05-16. Natural orbital description of the halo nucleus 6He. https://doi.org/10.1007/s41365-017-0332-6

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