Title
Multiphase Weakly Nonlinear Geometric Optics for Schrödinger Equations
Abstract
We describe and rigorously justify the nonlinear interaction of highly oscillatory waves in nonlinear Schrodinger equations, posed on Euclidean space or on the torus. Our scaling corresponds to a weakly nonlinear regime where the nonlinearity affects the leading order amplitude of the solution, but does not alter the rapid oscillations. We consider initial states which are super-positions of slowly modulated plane waves, and use the framework of Wiener algebras. A detailed analysis of the corresponding nonlinear wave mixing phenomena is given, including a geometric interpretation of the resonance structure for cubic nonlinearities. As an application, we recover and extend some instability results for the nonlinear Schrodinger equation on the torus in negative order Sobolev spaces.
Year
DOI
Venue
2010
10.1137/090750871
SIAM JOURNAL ON MATHEMATICAL ANALYSIS
Keywords
DocType
Volume
nonlinear Schrodinger equation,high-frequency limit,resonances,instability
Journal
42
Issue
ISSN
Citations 
1
0036-1410
3
PageRank 
References 
Authors
0.49
3
3
Name
Order
Citations
PageRank
Rémi Carles1125.41
Eric Dumas230.83
Christof Sparber3327.35