Boyd, John P.; Chen, Guan-Yu - In: Mathematics and Computers in Simulation (MATCOM) 55 (2001) 4, pp. 317-328
If the initial condition for the Korteweg–de Vries (KdV) equation is a weakly nonlinear wavepacket, then its evolution is described by the nonlinear Schrödinger (NLS) equation. This KdV/NLS connection has been known for many years, but its various aspects and implications have been discussed...