Quantum phase transitions in an interacting atom-molecule boson model

Santos, G., Foerster, A., Links, J., Mattei, E. and Dahmen, S. R. (2010) Quantum phase transitions in an interacting atom-molecule boson model. Physical Review A - Atomic, Molecular, and Optical Physics, 81 6: 1-6. doi:10.1103/PhysRevA.81.063621

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Author Santos, G.
Foerster, A.
Links, J.
Mattei, E.
Dahmen, S. R.
Title Quantum phase transitions in an interacting atom-molecule boson model
Journal name Physical Review A - Atomic, Molecular, and Optical Physics   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2010-06-14
Sub-type Article (original research)
DOI 10.1103/PhysRevA.81.063621
Open Access Status File (Publisher version)
Volume 81
Issue 6
Start page 1
End page 6
Total pages 6
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2011
Language eng
Abstract We study the quantum phase transitions of a model that describes the interconversion of interacting bosonic atoms and molecules. Using a classical analysis, we identify a threshold coupling line separating a molecular phase and a mixed phase. Through studies of the energy gap, von Neumann entanglement entropy, and fidelity, we give evidence that this line is associated with a boundary line in the ground-state phase diagram of the quantum system. © 2010 The American Physical Society.
Keyword Einstein condensate
Behavior
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article #063621

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2011 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 17 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 15 times in Scopus Article | Citations
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Created: Sun, 27 Jun 2010, 00:02:47 EST