  In the present work a general frame for the scattering theory of local,
relativistic dipole quantum fields is presented and some models of interacting
dipole fields are considered, i.e. local, relativistic quantum fields with
indefinite metric which asymptotically do not converge to free fields, but to
free dipole fields. Also, we give explicit formulae for the (nontrivial)
scattering matrix of dipole in- and out- fields for these models. Furthermore
we show how related dipole degrees of freedom occur in the perturbation theory
of certain two dimensional models, e.g. massive sine-Gordon or sinh-Gordon
models.
