Soliton bound states in long Josephson junctions
Gal'pern Yu. S. , Filippov A. T.
An analysis shows that stable localized states of fluxons can exist in a long Josephson junction with local inhomogeneities. A qualitative study is made of their spectrum. A change in the external magnetic field at the edge of the junction may cause, in addition to gradual changes in these states, abrupt changes to other states near bifurcation points in the spectrum.