| Autor: |
De Coster, C, Decroix, B, Heyde, Kris L G, Jolie, J, Lehmann, H, Wood, J L |
| Jazyk: |
angličtina |
| Rok vydání: |
1999 |
| Předmět: |
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| Popis: |
In the extended interacting boson model (EIBM) both particle- and hole-like bosons are incorporated to encompass multi-particle-multi-hole excitations at and near to closed shells.We apply the group theoretical concepts of the EIBM to the particular case of two coexisting systems in the same nucleus exhibiting a U(5) (for the regular configurations) and an SU(3) symmetry (for the intruder configurations).Besides the description of ``global'' symmetry aspects in terms of I-spin , also the very specific local mixing effects characteristic for the U(5)-SU(3) symmetry coupling are studied.The model is applied to the Po isotopes and a comparison with a morerealistic calculation is made. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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