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VOLUME 83 | ISSUE 5 | PAGE 227 Quantum phase transitions and backbending in even-even nuclei J. Kvasil, R. G. Nazmitdinov+* Institute of Particle and Nuclear Physics, Charles University, CZ-18000 Praha 8, Czech Republic +Departament de F\isica, Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain *Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia PACS: 05.70.Fh, 21.10.Re, 21.60.Jz, 27.70.+q Abstract We extend the classical Landau theory for rotating nuclei and show that the backbending in 162Yb, that comes about as a result of the two-quasiparticle alignment, is identified with the second order phase transition. We found that the backbending in 156Dy, caused by the instability of γ-vibrations in the rotating frame, corresponds to the first order phase transition. We suggest the empirical rule to determine the type of the phase transition in rotating nuclei undergoing a backbending. Download PS file (GZipped, 208K)  |  Download PDF file (327.4K) Список работ, цитирующих данную статью, см. здесь. List of articles citing this article can be found here.