Spectroscopic factor calculations in the $\mathit{\text{ab}}\mathit{\text{initio}}$ no-core shell model

The convergence properties of spectroscopic factors in the $\mathit{\text{ab}}\mathit{\text{initio}}$ 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${}_{\mathrm{o}\mathrm{p}\mathrm{t}}$ 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 $\mathit{\text{ab}}\mathit{\text{initio}}$ Monte Carlo calculations.