Journal of the Physical Society of Japan
The Wigner Transform of Soliton Solutions for the Nonlinear Schrödinger Equation
Hidetoshi Konno, Peter S. Lomdahl
Abstract
The Wigner function, a kind of wavelet transform is studied for one- and two-soliton solutions to the nonlinear Schrödinger equation. The exact expression of the Wigner transform for the one-soliton solution is obtained. The features of soliton-soliton interaction of different two-soliton states, the states of coherence analogous to that of two-localized wave packets in quantum mechanics, are displayed. Suitability of this transform for analyzing “ soliton ” in open systems is also discussed.