  In this thesis we study top-condensation models of electroweak symmetry
breaking. In particular we investigate a scenario in which the CP symmetry is
broken spontaneously due to the same condensates responsible of electroweak
symmetry breaking. In this way a CP violating CKM matrix, gauge boson masses,
and quark masses are dynamically generated. We started with a new four-fermion
interaction such that it can be rewritten using two auxiliary fields. These
fields become dynamical and play a similar role as the Higgs field in the SM
but being now composite.
