Fermion zero modes at the boundary of superfluid 3He-B
G. E. Volovik
Low Temperature Laboratory, Helsinki University of Technology, FIN-02015 HUT, Finland
Landau Institute for Theoretical Physics RAS, 119334 Moscow, Russia
PACS: 04.50.-h, 67.30.Hp
Abstract
Superfluid 3He-B belongs
to the important special class of time-reversal invariant topological
superfluids. It has Majorana fermions as edge states on the surface of bulk
3He-B. On the rough wall these fermion zero modes have finite density of
states at E=0. It is possible that Lancaster experiments with a wire
vibrating in 3He-B have already probed Majorana fermions living on the
surface of the wire.