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| 2009 | 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. |
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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.
| |  Dr Karen Kheruntsyan, Professor Matthew Davis | | eSpace Record: |
http://espace.library.uq.edu.au/view/UQ:180936
| | | | | Links: | Full text from publisher |
| Keywords: | boson systems, 1st Principle quantum physics | | |
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