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Elsevier Masson, Annals of Physics, 4(326), p. 926-957

DOI: 10.1016/j.aop.2010.12.001

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Quantum phase transitions in Bose-Fermi systems

Journal article published in 2011 by D. Petrellis ORCID, A. Leviatan, F. Iachello
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This paper is available in a repository.

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Abstract

Quantum phase transitions in a system of N bosons with angular momentum L=0,2 (s,d) and a single fermion with angular momentum j are investigated both classically and quantum mechanically. It is shown that the presence of the odd fermion strongly influences the location and nature of the phase transition, especially the critical value of the control parameter at which the phase transition occurs. Experimental evidence for the U(5)-SU(3) (spherical to axially-deformed) transition in odd-even nuclei is presented. ; Comment: 38 pages, 29 figures