DOUBLE CHIRAL LOGS IN THE PI-PI SCATTERING-AMPLITUDE

By using the Renormalization Group Equations in Chiral Perturbation Th eory, one can calculate the double chiral logs that appear at two loop s in any matrix element. We calculate them in the pi pi scattering amp litude, where they represent the potentially largest two loop contribu tion. It is shown that their correction is reasonably small.