The classical figure 1.4 shows that, at least for ,
there are invariant lines in the phase portrait encircling the origin.
In order to exclude the possibility that these classical invariant lines
account for the observed localized quantum dynamics,
in the present section initial states are
used that are shifted to
, well beyond the outermost
surviving
invariant line.
Essentially, the same localized rotation dynamics as in the previous
subsection is obtained.