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.

References in corpus (12)

• Structure of A=10-13 nuclei with two- plus three-nucleon interactions from chiral effective field theory
• Shell-model calculations and realistic effective interactions
• Complex coupled-cluster approach to an ab-initio description of open quantum systems
• Three-body forces and proton-rich nuclei
• Ab initio computation of the 17F proton-halo state and resonances in A = 17 nuclei
• Ab initio Gamow in-medium similarity renormalization group with resonance and continuum
• An {\it ab-initio} Gamow shell model approach with a core
• Study of neutron-rich calcium isotopes with a realistic shell-model interaction
• Gamow shell-model calculations of drip-line oxygen isotopes
• Chiral three-nucleon force and continuum for dripline nuclei and beyond
• Description of proton-rich nuclei in the $A\sim 20$ region with the Gamow shell model
• Radiative capture reaction for ${}^{17}$Ne formation within a full three-body model

Cited by in corpus (1)

• Trapped two-nucleon system in energy-dependent effective field theory