Continuum and three-nucleon force in Borromean system: The 17Ne case
Starting from chiral two-nucleon (2NF) and chiral three-nucleon (3NF) potentials, we present a detailed study of 17Ne, 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 Berg...
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Published in | Physics letters. B Vol. 808; no. C; p. 135673 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Netherlands
Elsevier B.V
01.09.2020
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | Starting from chiral two-nucleon (2NF) and chiral three-nucleon (3NF) potentials, we present a detailed study of 17Ne, 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 17Ne, 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. |
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Bibliography: | China Postdoctoral Science Foundation USDOE Office of Science (SC), Nuclear Physics (NP) de-sc0009971; SC0009971; 2018YFA0404401; 11835001; 11921006; 11975282; 11435014; BX20200136; NPT2020ZZ01; XDB34000000 National Natural Science Foundation of China (NSFC) National Key Research and Development Program of China CUSTIPEN |
ISSN: | 0370-2693 1873-2445 |
DOI: | 10.1016/j.physletb.2020.135673 |