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Nature 457, 273-274 (15 January 2009) | doi:10.1038/457273a; Published online 14 January 2009
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Condensed-matter physics: Going with the flow
Jonathan Keeling1 & Natalia G. Berloff2
Abstract
Observations of superfluid behaviour — flow without friction — of unusual character in a condensed-matter system pave the way to investigations of superfluidity in systems that are out of thermal equilibrium.
When in 1937 liquid helium was first observed to flow with negligible viscosity through a narrow gap, it was clear that, at low temperatures, helium was different from ordinary fluids. This prompted Pyotr Kapitza to name the phenomenon superfluidity1 by analogy with superconductivity.
- Jonathan Keeling is in the Department of Physics, University of Cambridge, Cambridgeshire CB3 0HE, UK.
Email: jmjk2@cam.ac.uk - Natalia G. Berloff is in the Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridgeshire CB3 0WA, UK.
Email: n.g.berloff@damtp.cam.ac.uk
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