Surface instability of a multi-component condensate and Andreev-Bashkin effect
D. A. Abanin
Low Temperature Laboratory, Helsinki University of Technology, FIN-02015 HUT, Finland
Landau Institute for Theoretical Physics RAS, 117334 Moscow, Russia
PACS: 03.75.Mn, 67.57.De, 68.03.Kn, 97.60.Jd
Abstract
It is shown that surface of a liquid consisting of several
interpenetrating superfluids moving with different velocities becomes
unstable at some threshold. We demonstrate that the criterion for the onset
of the instability changes in the presence of disspative interaction between
the surface and the environment. Possible physical applications of the
surface instability are discussed.