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Statements

Subject Item
n2:RIV%2F61389005%3A_____%2F06%3A00307918%21RIV08-AV0-61389005
rdf:type
skos:Concept n12:Vysledek
dcterms:description
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. 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. Nedávno bylo ukázáno,že Hamiltoniání metodu interagujících bosonů založený na grupě O(6)představuje k tradičnímu popisu jaderné rotace grupou SU(3)úkaz spojenou s Bohrovým a Mottelsonovým modelem.Zde se soustředujeme na kvantová fázový přechod mezi protáhlým a sploštělým tvarem indukovaný změnou kubické interakce.
dcterms:title
Fázový přechod mezi protáhlým a sploštělým tvarem v O (6) popisu jaderné rotace Prolate-oblate shape-phase transition in the O(6) description of nuclear rotation Prolate-oblate shape-phase transition in the O(6) description of nuclear rotation
skos:prefLabel
Prolate-oblate shape-phase transition in the O(6) description of nuclear rotation Prolate-oblate shape-phase transition in the O(6) description of nuclear rotation Fázový přechod mezi protáhlým a sploštělým tvarem v O (6) popisu jaderné rotace
skos:notation
RIV/61389005:_____/06:00307918!RIV08-AV0-61389005
n3:strany
97;111
n3:aktivita
n15:Z
n3:aktivity
Z(AV0Z10480505), Z(MSM0021620834)
n3:cisloPeriodika
1-2
n3:dodaniDat
n7:2008
n3:domaciTvurceVysledku
n17:4156587
n3:druhVysledku
n11:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
495483
n3:idVysledku
RIV/61389005:_____/06:00307918
n3:jazykVysledku
n10:eng
n3:klicovaSlova
NTERACTING-BOSON MODEL
n3:klicoveSlovo
n8:NTERACTING-BOSON%20MODEL
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[F33103C45A5B]
n3:nazevZdroje
Nuclear Physics. A
n3:obor
n4:BG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:rokUplatneniVysledku
n7:2006
n3:svazekPeriodika
765
n3:tvurceVysledku
Cejnar, P. Thiamová, Gabriela
n3:zamer
n6:MSM0021620834 n6:AV0Z10480505
s:issn
0375-9474
s:numberOfPages
15