News of the WeekCONDENSED MATTER PHYSICS

Tiny Whirlpools Prove Atoms Flow Freely

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Science  24 Jun 2005:
Vol. 308, Issue 5730, pp. 1848-1849
DOI: 10.1126/science.308.5730.1848b

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Summary

Stirring a cloud of ultracold atoms, physicists have produced an array of tiny whirlpools that pierced the cloud and proved that the atoms in it had formed a "superfluid," a strange quantum-mechanical soup that flows without any resistance and refuses to rotate.

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