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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.25359 |
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| _version_ | 1866911546160971776 |
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| author | Popa, T. Sandulescu, N. Gambacurta, D. |
| author_facet | Popa, T. Sandulescu, N. Gambacurta, D. |
| contents | We investigate the impact of isovector and isoscalar proton-neutron pairing correlations on the ground-state properties of even-even N=Z nuclei with mass numbers between A=16 and A=120. Nuclear mean fields are generated using the quark-meson coupling (QMC) energy density functional, while pairing correlations are treated within the quartet condensation model (QCM). Ground-state energies are obtained from axially deformed, self-consistent QMC+QCM calculations employing a zero-range pairing interaction with a density-dependent term derived consistently within the QMC framework. We show that proton-neutron pairing provides a significant contribution to the binding energies of N=Z nuclei, leading to improved agreement with experimental data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_25359 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Proton-Neutron Pairing in N=Z Nuclei within the Quark-Meson-Coupling Energy Density Functional Popa, T. Sandulescu, N. Gambacurta, D. Nuclear Theory We investigate the impact of isovector and isoscalar proton-neutron pairing correlations on the ground-state properties of even-even N=Z nuclei with mass numbers between A=16 and A=120. Nuclear mean fields are generated using the quark-meson coupling (QMC) energy density functional, while pairing correlations are treated within the quartet condensation model (QCM). Ground-state energies are obtained from axially deformed, self-consistent QMC+QCM calculations employing a zero-range pairing interaction with a density-dependent term derived consistently within the QMC framework. We show that proton-neutron pairing provides a significant contribution to the binding energies of N=Z nuclei, leading to improved agreement with experimental data. |
| title | Proton-Neutron Pairing in N=Z Nuclei within the Quark-Meson-Coupling Energy Density Functional |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2603.25359 |