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APS » Journals » Phys. Rev. Lett. » Volume 91 » Issue 4
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Phys. Rev. Lett. 91, 040403 (2003) [4 pages]

Pair Correlations in a Finite-Temperature 1D Bose Gas

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K. V. Kheruntsyan1, D. M. Gangardt2, P. D. Drummond1, and G. V. Shlyapnikov2,3,4
1ARC Centre of Excellence for Quantum-Atom Optics, Department of Physics, University of Queensland, Brisbane, Qld 4072, Australia
2Laboratoire Kastler-Brossel, Ecole Normale Supérieure, 24 rue Lhomond, 75005 Paris, France
3FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands
4Russian Research Center Kurchatov Institute, Kurchatov Square, 123182 Moscow, Russia

Received 6 December 2002; published 25 July 2003

We calculate the two-particle local correlation for an interacting 1D Bose gas at finite temperature and classify various physical regimes. We present the exact numerical solution by using the Yang-Yang equations and Hellmann-Feynman theorem and develop analytical approaches. Our results draw prospects for identifying the regimes of coherent output of an atom laser, and of finite-temperature “fermionization” through the measurement of the rates of two-body inelastic processes, such as photoassociation.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.040403
DOI:
10.1103/PhysRevLett.91.040403
PACS:
05.30.Jp, 03.75.Hh, 03.75.Pp
 
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