Microscopic triaxial quadrupole-octupole collective Hamiltonian for low-energy nuclear excitations
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866909856055689216 |
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| author | Xiang, J. Zhao, J. Li, Z. P. Vretenar, D. |
| author_facet | Xiang, J. Zhao, J. Li, Z. P. Vretenar, D. |
| contents | We present a microscopic triaxial quadrupole-octupole collective Hamiltonian (TQOCH) that unifies collective rotations, quadrupole-octupole vibrations, and their couplings to model low-lying nuclear states of both parities. The TQOCH's dynamics are governed by collective parameters derived from multidimensionally constrained covariant density functional theory. The model's validity is demonstrated through calculations of $^{152}$Sm, including its deformation energy surfaces, excitation spectra, and transition probabilities. As a predictive tool, the TQOCH probes complex nuclear phenomena like shape coexistence and phase transitions, directly connecting their microscopic origins to spectroscopic observables. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_16453 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Microscopic triaxial quadrupole-octupole collective Hamiltonian for low-energy nuclear excitations Xiang, J. Zhao, J. Li, Z. P. Vretenar, D. Nuclear Theory We present a microscopic triaxial quadrupole-octupole collective Hamiltonian (TQOCH) that unifies collective rotations, quadrupole-octupole vibrations, and their couplings to model low-lying nuclear states of both parities. The TQOCH's dynamics are governed by collective parameters derived from multidimensionally constrained covariant density functional theory. The model's validity is demonstrated through calculations of $^{152}$Sm, including its deformation energy surfaces, excitation spectra, and transition probabilities. As a predictive tool, the TQOCH probes complex nuclear phenomena like shape coexistence and phase transitions, directly connecting their microscopic origins to spectroscopic observables. |
| title | Microscopic triaxial quadrupole-octupole collective Hamiltonian for low-energy nuclear excitations |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2510.16453 |