  In 2D topological systems chiral edges may exhibit a spectral change due to
the formation of a Bose condensate and partial confinement in the bulk
according to the topological symmetry breaking (TSB) mechanism. We analyze in
detail what happens in the bulk as well as on the edge for a set of simple
chiral fractional quantum Hall systems. TSB corresponds to the spontaneous
breaking of a global discrete symmetry and therefore to the appearance of
domain walls in the bulk and kinks on the edge. The walls are locally
metastable and break if a confined particle-hole pair is created.
