Closed-shell properties of ${}^{24}$O with {\em ab initio} coupled-cluster theory

Abstract

We present an \emph{ab initio} calculation of spectroscopic factors for neutron and proton removal from ${}^{24}$O using the coupled-cluster method and a state-of-the-art chiral nucleon-nucleon interaction at next-to-next-to-next-to-leading order. In order to account for the coupling to the scattering continuum we use a Berggren single-particle basis that treats bound, resonant, and continuum states on an equal footing. We report neutron removal spectroscopic factors for the ${}^{23}$O states $J^{\pi }=1/2^{+}$, $5/2^{+}$, $3/2^{-}$ and $1/2^{-}$, and proton removal spectroscopic factors for the ${}^{23}$N states $1/2^{-}$ and $3/2^{-}$. Our calculations support the accumulated experimental evidence that ${}^{24}$O is a closed-shell nucleus.

5 pages, 2 figures, 1 table

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Cited by in corpus (6)

• Modern Ab Initio Approaches and Applications in Few-Nucleon Physics with A \ge 4
• Quenching of spectroscopic factors for proton removal in oxygen isotopes
• Ab-initio approach to effective single-particle energies in doubly closed shell nuclei
• Chiral three-nucleon forces and bound excited states in neutron-rich oxygen isotopes
• Exploring the anomaly in the interaction cross section and matter radius of 23O
• Neutron occupancy of the 0d5/2 orbital and the N=16 shell closure in 24O