  The formation of scalar condensates and dynamical symmetry breaking in the
U(n) four-fermion models (for n=2,3) with two coupling constants has been
studied by the functional integration method. The bosonization procedures of
the models under consideration are performed in one loop approximation. The
propagators of fermions, collective Bose-fields (bound states of fermions), as
well as the mass formulas for the fermions and bosons, are found. It is shown
that a self-consistent consideration of four-fermion models, in the framework
of dimension regularization, provides the mass relations for fermions for the
case $n\geq 3$. The effective Lagrangian of interacting scalar bosons is also
derived for the case n=2.
