Odd nuclei and shape phase transitions: the role of the unpaired fermion
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Tarih
2011
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
World Scientific Publ Co Pte Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Shape phase transitions in even and odd systems are reviewed within the frameworks of the Interacting Boson Model(IBM) and the Interacting Boson Fermion Model(IBFM), respectively and compared with geometric models when available. We discuss, in particular, the case of an odd j = 3/2 particle coupled to an even-even boson core that undergoes a transition from the spherical limit U(5) to the gamma-unstable limit O(6). Energy spectrum and electromagnetic transitions, in correspondence of the critical point, display behaviors qualitatively similar to those of the even core and they agree qualitatively with the model based on the E(5/4) boson-fermion symmetry. We describe then the U-BF(5) to SUBF(3) transition when a fermion is allowed to occupy the orbits j = 1/2, 3/2,5/2. The additional particle characterizes the properties at the critical points in finite quantum systems.
Açıklama
Fortunato, Lorenzo/0000-0003-2137-635X; Arias, Jose M./0000-0001-7363-4328; Alonso, Clara E/0000-0001-9365-4107
Anahtar Kelimeler
Kaynak
International Journal Of Modern Physics E-Nuclear Physics
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
20
Sayı
2
Künye
closedAccess
