Two-body anticorrelation in a harmonically trapped ideal Bose gas

Wright, T. M., Perrin, A., Bray, A., Schmiedmayer, J. and Kheruntsyan, K. V. (2012) Two-body anticorrelation in a harmonically trapped ideal Bose gas. Physical Review A: Atomic, Molecular and Optical Physics, 86 2: 023618.1-023618.9. doi:10.1103/PhysRevA.86.023618

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Author Wright, T. M.
Perrin, A.
Bray, A.
Schmiedmayer, J.
Kheruntsyan, K. V.
Title Two-body anticorrelation in a harmonically trapped ideal Bose gas
Journal name Physical Review A: Atomic, Molecular and Optical Physics   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2012-08-01
Sub-type Article (original research)
DOI 10.1103/PhysRevA.86.023618
Open Access Status File (Publisher version)
Volume 86
Issue 2
Start page 023618.1
End page 023618.9
Total pages 9
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2013
Language eng
Abstract We predict the existence of a dip below unity in the second-order coherence function of a partially condensed ideal Bose gas in harmonic confinement, signaling the anticorrelation of density fluctuations in the sample. The dip in the second-order coherence function is revealed in a canonical-ensemble calculation, corresponding to a system with fixed total number of particles. In a grand-canonical ensemble description, this dip is obscured by the occupation-number fluctuation catastrophe of the ideal Bose gas. The anticorrelation is most pronounced in highly anisotropic trap geometries containing small particle numbers. We explain the fundamental physical mechanism which underlies this phenomenon, and its relevance to experiments on interacting Bose gases.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article # 023618

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2013 Collection
 
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Created: Sat, 18 Aug 2012, 01:26:39 EST by Dr Karen Kheruntsyan on behalf of Physics