Introduction to the Hirota bilinear method
arXiv:solv-int/9708006 · doi:10.1007/BFb0113694
Abstract
We give an elementary introduction to Hirota's direct method of constructing multisoliton solutions to integrable nonlinear evolution equations. We discuss in detail how this works for equations in the Korteweg-de Vries class. We also show how Hirota's method can be used to search for new integrable evolution equations by testing for the existence of 3- and 4-soliton solutions, and list the results that have been obtained this way for the KdV, mKdV/sG and nlS classes of equations.
10 pages in LaTeX. To appear in "Lectures on the Integrability of Nonlinear Systems", Springer Lecture Notes in Physics 495