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arXiv · 1111.0781

Effect of a fermion on quantum phase transitions in bosonic systems

F. Iachello·A. Leviatan·D. Petrellis
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Abstract

The effect of a fermion with angular momentum j on quantum phase transitions of a (s,d) bosonic system is investigated. It is shown that the presence of a fermion strongly modifies the critical value at which the transition occurs, and its nature, even for small and moderate values of the coupling constant. The analogy with a bosonic system in an external field is mentioned. Experimental evidence for precursors of quantum phase transitions in bosonic systems plus a fermion (odd-even nuclei) is presented.

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F. Iachello, A. Leviatan, D. Petrellis. 2011-11-03. Effect of a fermion on quantum phase transitions in bosonic systems. https://doi.org/10.1016/j.physletb.2011.10.024

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