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64783 |
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|a Kruger, P.
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|a Massachusetts Institute of Technology. Research Laboratory of Electronics
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|a MIT-Harvard Center for Ultracold Atoms
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|a Hofferberth, Sebastian
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|a Hofferberth, Sebastian
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|a Hofferberth, Sebastian
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|a Mazets, I. E.
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|a Lesanovsky, I.
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|a Schmiedmayer, J.
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|a Weakly Interacting Bose Gas in the One-Dimensional Limit
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|b American Physical Society,
|c 2011-07-08T22:07:07Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/64783
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|a 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].
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|a European Union
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|a Austrian Science Fund
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|a Deutsche Forschungsgemeinschaft (DFG)
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|a Engineering and Physical Sciences Research Council
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|a en_US
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|a Article
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|t Physical Review Letters
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