Comment on "phase separation in a two-species Bose mixture"

Zhan, Fei and McCulloch, Ian P. (2014) Comment on "phase separation in a two-species Bose mixture". Physical Review A - Atomic, Molecular and Optical Physics, 89 5: . doi:10.1103/PhysRevA.89.057601

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Author Zhan, Fei
McCulloch, Ian P.
Title Comment on "phase separation in a two-species Bose mixture"
Journal name Physical Review A - Atomic, Molecular and Optical Physics   Check publisher's open access policy
ISSN 1050-2947
Publication date 2014-05-05
Year available 2014
Sub-type Article (original research)
DOI 10.1103/PhysRevA.89.057601
Open Access Status File (Publisher version)
Volume 89
Issue 5
Total pages 2
Place of publication College Park, MD United States
Publisher American Physical Society
Collection year 2015
Language eng
Abstract In an article in 2007, Mishra et al. [Phys. Rev. A 76, 013604 (2007)PLRAAN1050-294710.1103/PhysRevA.76.013604] investigated the two-component Bose-Hubbard model using the numerical density-matrix renormalization-group procedure. In the regime of interspecies repulsion Uab larger than the intraspecies repulsion U, they found a transition from a uniform miscible phase to phase separation occurring at a finite value of U, e.g., at around U=1.3 for Δ=Uab/U=1.05 and ρa=ρb=1/2. In this Comment, we show that this result is not correct, and in fact, the two-component Bose-Hubbard model is unstable to phase separation for any Uab>U>0.
Q-Index Code CX
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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