Kelvin-Helmholtz instability in anisotropic superfluids
T. Ruokola, J. Kopu
Low Temperature Laboratory, Helsinki University of Technology FIN-02015 HUT, Finland
PACS: 47.20.Ma, 67.57.Np, 68.05.-n
Abstract
Motivated by recent theoretical and experimental interest in the
subject, we derive the condition of interfacial Kelvin-Helmholtz
instability for a system of two flowing superfluids (one sliding on
the other). The tensor structure of superfluid densities in
anisotropic superfluids - such as 3He-A, and also 3He-B under
external magnetic field - is properly taken into account. The
consequences relevant to experiments on the A-B phase boundary in
superfluid 3He are discussed.