Effect of a fermion on quantum phase transitions in bosonic systems

F. Iachello*, A. Leviatan, D. Petrellis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

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 languageAmerican English
Pages (from-to)379-382
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume705
Issue number4
DOIs
StatePublished - 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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