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arXiv · 2411.04719

Spectroscopic factor calculations in the \textit{ab initio} no-core shell model

M. R. Xie·J. G. Li·N. Michel·W. Zuo
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Abstract

The convergence properties of spectroscopic factors in the \textit{ab initio} no-core shell model are hereby investigated. For this, we consider nuclear energies and spectroscopic factors in $A = 6$ and 7 isotopes, using the chiral forces NNLO$_{\rm opt}$ and N$^3$LO. While low-lying spectrum energy demonstrates remarkable convergence with the increase of model space within the no-core shell model, the spectroscopic factor exhibits no definitive convergence trend and seems independent of the employed nuclear interaction. The use of spectroscopic factors issued from the no-core shell model to calculate cross-sections of knockout reaction might then be questionable. The results are compared with that of the standard shell model and \textit{ab initio} Monte Carlo calculations.

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M. R. Xie, J. G. Li, N. Michel, W. Zuo. 2024-11-07. Spectroscopic factor calculations in the \textit{ab initio} no-core shell model. https://doi.org/10.1103/physrevc.110.054301

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