Natural orbital description of the halo nucleus He-6

作者：Constantinou Chrysovalantis; Caprio Mark A; Vary James P^*; Maris Pieter

来源：Nuclear Science and Techniques, 2017, 28(12): 179.

DOI：10.1007/s41365-017-0332-6

• Neutron halo nucleus He-6
• Nuclear structure
• Nuclear theory

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 He-6, relative to the traditional oscillator basis.

• 出版日期2017-12