  We have applied the gaussian auxiliary field method introduced by Mazenko to
the ordering dynamics of a non-conserved scalar system with attractive
long-range interactions. This study provides a test-bed for the approach and
shows some of the difficulties encountered in constructing a closed theory for
the pair correlation function. The equation obtained for the equal-time
two-point correlation function is studied in the limiting cases of small and
large values of the scaling variable. A Porod regime at short distance and an
asymptotic power-law decay at large distance are obtained. The theory, is not,
however, consistent with the expected growth-law, and attempts to retrieve the
correct growth lead to inconsistencies. These results indicate a failure of the
gaussian assumption (at least in the form in which we use it) for this system.
