Algebraic description of the triaxially to axially rotational shape phase transition
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918128369270784 |
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| author | Zhang, Yu Liu, Yu Xin Pan, Feng Draayer, J. P. |
| author_facet | Zhang, Yu Liu, Yu Xin Pan, Feng Draayer, J. P. |
| contents | Within the framework of the interacting boson model, we propose a novel algebraic scheme to describe spin-dependent structural evolutions in triaxial nuclei. Our analysis demonstrates that a triaxially to axially rotational shape phase transition can be induced by the high-order correction which is microscopically motivated by the pairing interaction on the $γ$-unstable rotation. This prescription is further applied to describe the structural evolutions along the yrast sequences of $^{132}$Ba and $^{130}$Xe, providing an exemplary case for demonstrating a unified explanation of both low-energy collective structures and high-spin phenomena in O(6)-like nuclei. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_15426 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Algebraic description of the triaxially to axially rotational shape phase transition Zhang, Yu Liu, Yu Xin Pan, Feng Draayer, J. P. Nuclear Theory Within the framework of the interacting boson model, we propose a novel algebraic scheme to describe spin-dependent structural evolutions in triaxial nuclei. Our analysis demonstrates that a triaxially to axially rotational shape phase transition can be induced by the high-order correction which is microscopically motivated by the pairing interaction on the $γ$-unstable rotation. This prescription is further applied to describe the structural evolutions along the yrast sequences of $^{132}$Ba and $^{130}$Xe, providing an exemplary case for demonstrating a unified explanation of both low-energy collective structures and high-spin phenomena in O(6)-like nuclei. |
| title | Algebraic description of the triaxially to axially rotational shape phase transition |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2508.15426 |