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Quantum gases

Superfluidity goes 2D

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In two-dimensional systems, superfluidity occurs in the absence of the long-range order associated with Bose–Einstein condensates. This phenomenon is illustrated in the direct observation of superfluidity in a 2D atomic Bose gas.

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Correspondence to Gretchen K. Campbell.

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The author declares no competing financial interests.

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Campbell, G. Superfluidity goes 2D. Nature Phys 8, 643–644 (2012). https://doi.org/10.1038/nphys2395

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