Abstract
Starting from realistic nuclear forces, we have developed a core Gamow shell model which can describe resonance and continuum properties of loosely-bound or unbound nuclear systems. To describe properly resonance and continuum, the Berggren representation has been employed, which treats bound, resonant and continuum states on equal footing in a complex-momentum (complex-k) plane. To derive the model-space effective interaction based on realistic forces, the full Qˆ-box folded-diagram renormalization has been, for the first time, extended to the nondegenerate complex-k space. The CD-Bonn potential is softened by using the Vlow-k method. Choosing 16O as the inert core, we have calculated sd-shell neutron-rich oxygen isotopes, giving good descriptions of both bound and resonant states. The isotopes 25,26O are calculated to be resonant even in their ground states.
Original language | English |
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Pages (from-to) | 227-232 |
Number of pages | 6 |
Journal | Physics Letters B |
Volume | 769 |
DOIs | |
State | Published - Jun 10 2017 |
Externally published | Yes |
Funding
This work has been supported by the National Key Basic Research Program of China under Grant No. 2013CB834402; the National Natural Science Foundation of China under Grants No. 11235001, No. 11320101004 and No. 11575007.
Funders | Funder number |
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National Natural Science Foundation of China | 11320101004, 11235001, 11575007 |
National Basic Research Program of China (973 Program) | 2013CB834402 |
Keywords
- Continuum
- Gamow shell model
- Realistic nuclear forces
- Resonance
- Spectra
- Unstable nuclei