The application of infinite-order perturbation theory to biological polymers

Quantum mechanical perturbation theory of infinite order is applied to an infinitely long biological polymeric chain. The resulting ensemble-averaged density of electronic states is approximately calculated by truncation according to a method introduced by S. Y. Wu [(1974) J. Math. Phys. 15 , 947–949]. The results are found to require reasonable computational facilities and the method may be applied to a study of mutagenicity.