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Natural orbital description of the halo nucleus 6He
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作者 Chrysovalantis Constantinou mark a.caprio +1 位作者 James P.Vary Pieter Maris 《Nuclear Science and Techniques》 SCIE CAS CSCD 2017年第12期237-243,共7页
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 di... 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. 展开更多
关键词 NEUTRON HALO NUCLEUS 6He NUCLEAR structure NUCLEAR theory
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