Nonlocal pair correlations in the one-dimensional Bose gas at finite temperature

Deuar, P., Sykes, A. G., Gangardt, D. M., Davis, M. J., Drummond, P. D. and Kheruntsyan, K. V. (2009) Nonlocal pair correlations in the one-dimensional Bose gas at finite temperature. Physical Review A, 79 4: 043619-1-043619-20. doi:10.1103/PhysRevA.79.043619

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Author Deuar, P.
Sykes, A. G.
Gangardt, D. M.
Davis, M. J.
Drummond, P. D.
Kheruntsyan, K. V.
Title Nonlocal pair correlations in the one-dimensional Bose gas at finite temperature
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2009-04-20
Year available 2009
Sub-type Article (original research)
DOI 10.1103/PhysRevA.79.043619
Open Access Status File (Publisher version)
Volume 79
Issue 4
Start page 043619-1
End page 043619-20
Total pages 20
Place of publication College Park, MD, United States
Publisher American Physcial Society
Collection year 2010
Language eng
Abstract The behavior of the spatial two-particle correlation function is surveyed in detail for a uniform one-dimensional Bose gas with repulsive contact interactions at finite temperatures. Long-, medium-, and short-range effects are investigated. The results span the entire range of physical regimes from ideal gas to strongly interacting and from zero temperature to high temperature (Gross-Pitaevskii) and strongly interacting (Tonks-Girardeau) gases. We present perturbative analytic methods, available at strong and weak couplings, and first-principles numerical results using imaginary time simulations with the gauge-P representation in regimes where perturbative methods are invalid. Nontrivial effects are observed from the interplay of thermally induced bunching behavior versus interaction induced antibunching.
Keyword Boson systems
1st Principle quantum physics
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
2010 Higher Education Research Data Collection
 
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Created: Thu, 03 Sep 2009, 08:08:36 EST by Mr Andrew Martlew on behalf of ARC Centre of Excellence for Quantum-Atom Optics