Excerpt from Upper Bounds on Scattering Lengths for Static Potentials The scattering length. The Born approximation also provides an upper bound, Since it may be derived from the Kohn principle. 'while the Rubinow formulation9 need not give a bound, for those calculations that have been performed in the Robinow form, it is a trivial matter to convert the results to the Kohn form, thereby obtaining a bound. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.