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.
| Original language | English |
|---|---|
| Pages (from-to) | 379-382 |
| Number of pages | 4 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 705 |
| Issue number | 4 |
| DOIs | |
| State | Published - 17 Nov 2011 |
Bibliographical note
Funding Information:This work was supported in part under DOE Grant No. DE-FG-02-91ER-40608 and in part by a grant from the U.S.–Israel Binational Science Foundation .
Keywords
- Algebraic models
- Bose-Fermi systems
- Interacting boson-fermion model (IBFM)
- Quantum shape-phase transitions
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