Free–energy landscape and the critical velocity of superfluid films

We briefly review some important properties of superfluid flow, especially the problem of critical velocity. We then present new numerical simulation results for a mesoscopic model of superfluids shedding light on the free-energy landscape, the critical velocity and the formation of vortices, which...

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Bibliographic Details
Published in:Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences physical, and engineering sciences, 2004-08, Vol.362 (1821), p.1595-1604
Main Authors: Batrouni, G. G., Ramstad, T., Hansen, A.
Format: Article
Language:English
Subjects:
Condensate
Critical Velocity
Diamagnetism
Flow velocity
Free energy
Local minimum
Metropolitan areas
Momentum
Persistent Current
Quantum mechanics
Superfluid
Superfluidity
Tunnels
Vortex
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Summary:We briefly review some important properties of superfluid flow, especially the problem of critical velocity. We then present new numerical simulation results for a mesoscopic model of superfluids shedding light on the free-energy landscape, the critical velocity and the formation of vortices, which destroy the superflow when the velocity is high.
ISSN:1364-503X
1471-2962
DOI:10.1098/rsta.2004.1397