Continuum and three-nucleon force in Borromean system: The 17Ne case

Abstract

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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Cited by in corpus (10)

• The roles of three-nucleon force and continuum coupling in mirror symmetry breaking of oxygen mass region
• Proton decays in ${}^{16}$Ne and ${}^{18}$Mg and isospin-symmetry breaking in carbon isotopes and isotones
• Deformed in-medium similarity renormalization group
• Recent progress in configuration-interaction shell model
• Nuclear reactions in artificial traps
• Ab initio descriptions of $A=16$ mirror nuclei with resonance and continuum coupling
• Complex valence-space effective operators for observables: the Gamow-Teller transition
• Ab-initio no-core shell model study of ${}^{18-24}$Ne isotopes
• Gamow shell model study of the 17Ne(p, p) reaction and of isospin symmetry breaking in 18Na
• Trapped two-nucleon system in energy-dependent effective field theory