Weakly Interacting Bose Gas in the One-Dimensional Limit
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Kruger-2010-Weakly Interacting Bose Gas in the One-Dimensional Limit.pdf
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Author(s)
Kruger, P.
Hofferberth, Sebastian
Mazets, I. E.
Lesanovsky, I.
Schmiedmayer, J.
Date Issued
December 2010
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Krüger, P. et al. “Weakly Interacting Bose Gas in the One-Dimensional Limit.” Physical Review Letters 105.26 (2010) : n. pag. © 2010 The American Physical Society
Version
Final published version
Abstract
We prepare a chemically and thermally one-dimensional (1D) quantum degenerate Bose gas in a single microtrap. We introduce a new interferometric method to distinguish the quasicondensate fraction of the gas from the thermal cloud at finite temperature. We reach temperatures down to kT≈0.5ℏω⊥ (transverse oscillator eigenfrequency ω⊥) when collisional thermalization slows down as expected in 1D. At the lowest temperatures the transverse-momentum distribution exhibits a residual dependence on the line density n1D [n subscript 1D], characteristic for 1D systems. For very low densities the approach to the transverse single-particle ground state is linear in n1D [n subscript 1D].
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
MIT-Harvard Center for Ultracold Atoms
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.105.265302
