J. Phys. Chem. 1986, 90, 2379-2384 three-body Green's function is a very good approximation to the true Gs(t)for C , 5 1 when t 5 27 (the experimental time regime investigated by G F and by us), but progressively worsens at longer times. It seems reasonable a priori that the three-body Gs(t)will exhibit similar behavior in the present systems (C,
