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Erschienen in:
2005 | OriginalPaper | Buchkapitel
The Nonlinear Schrödinger Equation and Solitary Waves
Erschienen in: Nonlinear Partial Differential Equations for Scientists and Engineers
Verlag: Birkhäuser Boston
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It has already been indicated in Section 2.3 that the nonlinear Schrödinger (NLS) equation arises in a wide variety of physical problems in fluid mechanics, plasma physics, and nonlinear optics. The most common applications of the NLS equation include self-focusing of beams in nonlinear optics, modeling of propagation of electromagnetic pulses in nonlinear optical fibers which act as wave guides, and stability of Stokes waves in water. Some formal derivations of the NLS equation have been obtained by several methods which include the multiple scales expansions, the asymptotic method, Whitham’s (1965) averaged variational equations, and Phillips’ (1981) resonant interaction equations. Zakharov and Shabat (1972) developed an ingenious inverse scattering method to show that the NLS equation is completely integrable. The NLS equation is of great importance in adding to our fundamental knowledge of the general theory of nonlinear dispersive waves.