Prolate-oblate shape-phase transition in the O(6) description of nuclear rotation
1.
SYSNO ASEP
0307918
Druh ASEP
J - Článek v odborném periodiku
Zařazení RIV
J - Článek v odborném periodiku
Poddruh J
Ostatní články
Název
Prolate-oblate shape-phase transition in the O(6) description of nuclear rotation
Překlad názvu
Fázový přechod mezi protáhlým a sploštělým tvarem v O (6) popisu jaderné rotace
Tvůrce(i)
Thiamová, Gabriela (UJF-V) Cejnar, P. (CZ)
Zdroj.dok.
Nuclear Physics. A. - : Elsevier
- ISSN 0375-9474
Roč. 765, 1-2 (2006), s. 97-111
Poč.str.
15 s.
Jazyk dok.
eng - angličtina
Země vyd.
NL - Nizozemsko
Klíč. slova
NTERACTING-BOSON MODEL
Vědní obor RIV
BG - Jaderná, atomová a mol. fyzika, urychlovače
CEZ
AV0Z10480505 - UJF-V (2005-2011)
Anotace
Recently it has been shown that the O(6)-based Hamiltonian of the interacting boson model (IBM) with three-body interactions parallels the traditional SU(3) description of nuclear rotation in a way which is closely related to the Bohr-Mottelson model. Here we focus on properties of quantum phase transitions between prolate and oblate ground-state shapes induced by the sign inversion of the cubic interaction. The classical-limit analysis shows that the phase structure of our model is partly analogous to that of the standard IBM with only two-body interactions. A triple point of spherical, prolate and oblate phases is identified within the O(6) dynamical symmetry. Quadrupole shape invariants and wave-function overlaps are applied to measure the phase-transitional rate at a realistic number of bosons. (c) 2005 Elsevier B.V. All rights reserved.
