On Kelvin-Helmholtz instability in superfluids
arXiv:cond-mat/0202445 · doi:10.1134/1.1490014
Abstract
The Kelvin-Helmholtz instability in superfluids is discussed, based on the first experimental observation of such instability at the interface between superfluid 3He-A and superfluid 3He-B (cond-mat/0111343). We discuss why (i) the Kelvin-Helmholtz criterion, (ii) the Landau critical velocity for nucleation of ripplons, and (iii) the free energy consideration, all give different values for the instability treshold.
LaTeX file, 13 pages, 1 figure, misprints are corrected
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