  The role of spin-torsion coupling to gravity is analyzed in the context of a
model of chaotic inflation. The system of equations constructed from the
Einstein-Cartan and inflaton field equations are studied and it is shown that
spin-torsion interactions are effective only at the very first e-folds of
inflation, becoming quickly negligible and, therefore, not affecting the
standard inflationary scenario nor the density perturbations spectrum
predictions.
