The authors construct a revised pf-shell interaction, GX1R, by replacing the tensor-force matrix elements of GX1B1 with Yukawa-form values fitted to the USDB interaction, and show that shell-model predictions remain similar to those of GX1B1.
Shell model results for $^{47-58}$Ca isotopes in the $fp$, $fpg_{9/2}$ and $fpg_{9/2}d_{5/2}$ model spaces
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abstract
We have reported shell-model results for $^{47-58}$Ca isotopes in the $fp$, $fpg_{9/2}$ and $fpg_{9/2}d_{5/2}$ model spaces using realistic $NN$ interaction. We have also performed a systematic shell-model study using interactions derived from in-medium similarity-renormalization group (IM-SRG) targeted for a particular nucleus with chiral $NN$ and $3N$ forces. The results obtained are in a reasonable agreement with the available experimental data in $fp$ model space with $NN$ interaction. It is shown that the $g_{9/2}$ and $d_{5/2}$ orbitals play an important role for heavier neutron-rich $^{54-58}$Ca isotopes, while it is marginal for $^{47-52}$Ca. We have also examined spectroscopic factor strengths using $NN$ and $NN+3N$ interactions for recently available experimental data.
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nucl-th 1years
2019 1verdicts
CONDITIONAL 1representative citing papers
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A way forward towards improvement of tensor force in \textit{pf}-shell
The authors construct a revised pf-shell interaction, GX1R, by replacing the tensor-force matrix elements of GX1B1 with Yukawa-form values fitted to the USDB interaction, and show that shell-model predictions remain similar to those of GX1B1.