A study of the generalized Hubbard model in the ferromagnetic
phase by means of the *COM* is reported in
Ref. [87]. In particular the following
properties have been computed:

- The thermodynamic properties (i.e., phase diagram, magnetization) [87]

The *COM* results have been analyzed in relation with
the ones obtained by:

- Projection Techniques [62]

A ferromagnetic solution for the 2D Extended Hubbard model has
been found by means of a fully self-consistent approximation
enforcing Pauli symmetry constrains. The transition results to be
of the second order both lowering the filling and the interaction
strength. The saturation is reached by increasing . An
increment of the parameter lowers the magnetization. These
results are in qualitative agreement with the ones by W. Nolting
*et al.*
[62] for the three-dimensional Hubbard model and permit an easy
determination of the critical values for the filling and the
Coulomb interaction in the two-dimensional case.

avella 2002-06-10