On Kelvin-Helmholtz instability in superfluids

Details On Kelvin-Helmholtz instability in superfluids On Kelvin-Helmholtz instability in superfluids

2002-02-25

arxiv.org/abs/cond-mat/0202445v4

Pis'ma ZhETF 75 (2002) 491-495; JETP Lett. 75 (2002) 418-422

Physics

Condensed Matter

LaTeX file, 13 pages, 1 figure, misprints are corrected

Scientific paper

10.1134/1.1490014

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.

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