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Regimes of quantum degeneracy in trapped 1D gases

D. S. Petrov·G. V. Shlyapnikov·J. T. M. Walraven
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Abstract

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

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D. S. Petrov, G. V. Shlyapnikov, J. T. M. Walraven. 2000-06-22. Regimes of quantum degeneracy in trapped 1D gases. https://doi.org/10.1103/physrevlett.85.3745

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