Continuum and three-nucleon force in Borromean system: The 17Ne case
Continuum and three-nucleon force in Borromean system: The 17Ne case
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DOI：
10.1016/j.physletb.2020.135673
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发表时间：
2020-08
影响因子：
4.4
通讯作者：
Y. Ma;F. Xu;N. Michel;S. Zhang;J.G. Li;B. Hu;L. Coraggio;N. Itaco;A. Gargano
中科院分区：
文献类型：
--
作者：
Y. Ma;F. Xu;N. Michel;S. Zhang;J.G. Li;B. Hu;L. Coraggio;N. Itaco;A. Gargano
Starting from chiral two-nucleon (2NF) and chiral three-nucleon (3NF) potentials, we present a detailed study of 17 Ne, a Borromean system, with the Gamow shell model which can capture continuum effects. More precisely, we take advantage of the normal-ordering approach to include the 3NF and the Berggren representation to treat bound, resonant and continuum states on equal footing in a complex-momentum plane. In our framework, 3NF is essential to reproduce the Borromean structure of 17 Ne, while the continuum is more crucial for the halo property of the nucleus. The two-proton halo structure is demonstrated by calculating the valence proton density and correlation density. The astrophysically interesting 3/2− excited state has its energy above the threshold of the proton emission, and therefore the two-proton decay should be expected from the state.
