  An approach for $q$-deformed Bogoliubov transformations is presented.
Assuming a left-right module action together with an *-operation and deformed
commutation relations, we construct a q-deformation of the nonlinear Bogoliubov
transformation. Moreover we give a general result which can be applied in
Quantum Field Theory. Finally, we introduce a Hopf structure when q is a root
of unity.
