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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/55523
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- Nonlocal pair correlations in the one-dimensional Bose gas at finite temperature
- Deuar, P.; Sykes, Andrew G.; Gangardt, D. M.; Davis, Matthew J.; Drummond, P. D.; Kheruntsyan, K. V.
- 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.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy
- Physical Review A: Atomic, Molecular and Optical Physics, Vol. 79, no. 4 (Apr 2009)
- Publication year
- FOR Code(s)
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics; 0204 Condensed Matter Physics; 0205 Optical Physics
- Antibunching; Boson systems; Fermons; Impenetrable bosons; Perturbation theory; Photons; Tonks-Girardeau gas
- American Physical Society
- Publisher URL
- Copyright © 2009 American Physical Society. Published version of the paper reproduced here with the kind permission of the publisher for non-commercial purposes only.
- Full text
- Peer reviewed