Journal
PHYSICAL REVIEW LETTERS
Volume 85, Issue 18, Pages 3745-3749Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.3745
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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.
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