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

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

2010-12-27

arxiv.org/abs/1012.5678v1

Phys.Rev.C83:021305,2011

Physics

Nuclear Physics

Nuclear Theory

5 pages, 2 figures, 1 table

Scientific paper

10.1103/PhysRevC.83.021305

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.

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