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      Ab-initio no-core Gamow shell model calculations of multi-neutron systems

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          Abstract

          The existence of multi-neutron systems has always been a debatable question. Indeed, both inter-nucleon correlations and a large continuum coupling occur in these states. We then employ the ab-initio no-core Gamow shell model to calculate the resonant energies and widths of the trineutron and tetraneutron systems with realistic interactions. Our results indicate that trineutron and tetraneutron are both unbound and bear broad widths. The calculated energy and width of tetraneutron are also comparable with recent experimental data. Moreover, our calculations suggest that the energy of trineutron is lower than that of tetraneutron, while its resonance width is also narrower. This strongly suggests that trineutron is more likely to be experimentally observed than tetraneutron. We thus suggest experimentalists to search for trineutron at low energy.

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          Author and article information

          Journal
          15 November 2019
          Article
          10.1103/PhysRevC.100.054313
          1911.06485
          99afc0df-c8f4-40b2-8a48-3ddbe659088a

          http://creativecommons.org/licenses/by/4.0/

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          Phys. Rev. C 100, 054313 (2019)
          5 pages; 2 figures
          nucl-th

          Nuclear physics
          Nuclear physics

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