Abstract
We have used an ab initio Gamow shell model to study the isospin symmetry breaking in the A=16 mirror nuclei of F16, N16, Ne16, and C16. Starting from a chiral interaction with two-nucleon force (2NF) at N3LO and three-nucleon force (3NF) at N2LO, a complex-momentum psd-shell Hamiltonian was constructed by employing the many-body perturbation theory in the Gamow Hartree-Fock basis which includes bound, resonant, and continuum states self-consistently. Such an elaborated ab initio Gamow shell model with both continuum coupling and 3NF included can properly treat the many-body correlations of weakly bound and unbound nuclei. The mirror partners of F16 and N16 exhibit different level orders in their excitation spectra, which can be well explained by the inclusion of 3NF in the calculation. The isospin asymmetry between the mirror partners Ne16 and C16 was studied in detail by insight into their configuration structures. The interplay between 3NF and the continuum coupling is discussed in the weakly bound and unbound nuclear states.
| Original language | English |
|---|---|
| Article number | 064316 |
| Journal | Physical Review C |
| Volume | 108 |
| Issue number | 6 |
| DOIs | |
| State | Published - Dec 2023 |
| Externally published | Yes |
Funding
Valuable discussions with Simin Wang are gratefully acknowledged. This work has been supported by the National Natural Science Foundation of China under Grants No. 12335007, No. 11835001, No. 11921006, No. 12035001, No. 12205340, and No. 12135017; the Gansu Natural Science Foundation under Grant No. 22JR5RA123; the State Key Laboratory of Nuclear Physics and Technology, Peking University under Grant No. NPT2020ZZ01. We acknowledge the High-Performance Computing Platform of Peking University for providing computational resources.