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APS » Journals » Phys. Rev. Lett. » Volume 85 » Issue 18
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Phys. Rev. Lett. 85, 3745–3749 (2000)

Regimes of Quantum Degeneracy in Trapped 1D Gases

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D. S. Petrov1,2, G. V. Shlyapnikov1,2, and J. T. M. Walraven1
1FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands
2Russian Research Center, Kurchatov Institute, Kurchatov Square, 123182 Moscow, Russia

Received 22 June 2000; published in the issue dated 30 October 2000

We discuss the regimes of quantum degeneracy in a trapped 1D gas and obtain the diagram of states. Three regimes have been identified: the Bose-Einstein condensation (BEC) regimes of a true condensate and quasicondensate, and the regime of a trapped Tonks gas (gas of impenetrable bosons). The presence of a sharp crossover to the BEC regime requires extremely small interaction between particles. We discuss how to distinguish between true and quasicondensates in phase coherence experiments.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.3745
DOI:
10.1103/PhysRevLett.85.3745
PACS:
03.75.Fi, 05.30.Jp
 
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