تقرير
Higher-rank discrete symmetries in the IBM. III Tetrahedral shapes
| العنوان: | Higher-rank discrete symmetries in the IBM. III Tetrahedral shapes |
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| المؤلفون: | Van Isacker, Piet, Bouldjedri, Abdelhamid, Zerguine, Salima |
| سنة النشر: | 2020 |
| المجموعة: | Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Theory |
| الوصف: | In the context of the sf-IBM, the interacting boson model with s and f bosons, the conditions are derived for a rotationally invariant and parity-conserving Hamiltonian with up to two-body interactions to have a minimum with tetrahedral shape in its classical limit. A degenerate minimum that includes a shape with tetrahedral symmetry can be obtained in the classical limit of a Hamiltonian that is transitional between the two limits of the model, U_f(7) and SO_{sf}(8). The conditions for the existence of such a minimum are derived. The system can be driven towards an isolated minimum with tetrahedral shape through a modification of two-body interactions between the f bosons. General comments are made on the observational consequences of the occurrence of shapes with a higher-rank discrete symmetry in the context of algebraic models. Comment: 18 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.nuclphysa.2020.122037 |
| URL الوصول: | http://arxiv.org/abs/2009.06264 |
| رقم الأكسشن: | edsarx.2009.06264 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.nuclphysa.2020.122037 |
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