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Artículo
Quantum phase transitions in the interacting boson model: Integrability, level repulsion, and level crossing
(American Physical Review, 2003-10-17)
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 attributed to quantum integrability, whereas ...
Artículo
Phase transitions and critical points in the rare-earth region
(American Physical Society, 2003-08-01)
A systematic study of isotope chains in the rare-earth region is presented. For chains 60 144 2 154Nd, 62 146 2 160Sm, 64 148 2 162Gd, and 66 150 2 166 Dy, energy levels, E2 transition rates, and two-neutron separation ...
Artículo
U(5)-O(6) transition in the interacting boson model and the E(5) critical point symmetry
(American Physical Society, 2003-10-01)
The relation of the recently proposed E(5) critical point symmetry with the interacting boson model is investigated. The large-N limit of the interacting boson model at the critical point in the transition ...