COORDINATE REDEFINITION INVARIANCE AND EXTRA TERMS

We investigate the issue of coordinate redefinition invariance by care fully performing non-linear transformations in the discretized quantum mechanical path integral, By resorting to hamiltonian path integral m ethods, we provide the first complete derivation of the extra term (be yond the usual jacobian term) which arises in the action when a non-li near transformation is made, We comment on possible connections with t he renormalization group, by showing that these extra terms may emerge from a ''blocking'' procedure.