RT Journal Article
T1 Quantum Phase Transitions in the Interacting Boson Model : Integrability, level repulsion and level crossing
A1 Arias Carrasco, José Miguel
A1 Dukelsky, J.
A1 García Ramos, José Enrique
K1 Bosones
AB We study the quantum phase transition mechanisms that arise in the Interacting Boson Model.We show that the second-order nature of the phase transition from U(5) to O(6) may be attributedto quantum integrability, whereas all the first-order phase transitions of the model are due to levelrepulsion with one singular point of level crossing. We propose a model Hamiltonian with a truefirst-order phase transition for finite systems due to level crossings.
PB American Physical Society
SN 0031-9007
YR 2003
FD 2003-10-14
LK http://hdl.handle.net/10272/5465
UL http://hdl.handle.net/10272/5465
LA eng
NO Arias Carrasco, J.M., Dukelsky, J., García Ramos, J.E. : "Quantum Phase Transitions in the Interacting Boson Model: Integrability, level repulsion and level crossing". Physical Review Letters. Vol. 91, n. 16 (2003). ISSN 0031-9007
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026