Amazon.com description: Product Description: Breakthroughs in handling nonlinear systems have had a tremendous impact throughout the sciences, allowing researchers to create more realistic models for a wide range of processes. This book, although written at an introductory level, covers some of the most exciting recent work, including soliton theory, nonlinear lattices, excitable media, perturbation theory, and the theory of quantum lattices. It will be a valuable guide for graduate students and researchers in physics, applied mathematics, biophysics, and engineering.