Nous considérons l'équation de Schödinger non linéaire et nous montrons la solution de cette équation ayant pour donnée initiale avec ε petit, va échanger périodiquement de l'énergie entre les modes de Fourier et dès que . Cet effet de battement, dont la période est de l'ordre de , est mis en évidence pour des temps de l'ordre de . Nous présentons aussi quelques généralisations.
We consider the nonlinear Schrödinger equation and we prove that the solution of this equation, with small initial datum , will periodically exchange energy between the Fourier modes and as soon as . This beating effect is described up to time of order while the frequency is of order . We also discuss some generalizations.
@article{AIHPC_2011__28_1_127_0, author = {Gr\'ebert, Beno\^\i t and Villegas-Blas, Carlos}, title = {On the energy exchange between resonant modes in nonlinear Schr\"odinger equations}, journal = {Annales de l'I.H.P. Analyse non lin\'eaire}, volume = {28}, year = {2011}, pages = {127-134}, doi = {10.1016/j.anihpc.2010.11.004}, mrnumber = {2765514}, zbl = {1216.35137}, language = {en}, url = {http://dml.mathdoc.fr/item/AIHPC_2011__28_1_127_0} }
Grébert, Benoît; Villegas-Blas, Carlos. On the energy exchange between resonant modes in nonlinear Schrödinger equations. Annales de l'I.H.P. Analyse non linéaire, Tome 28 (2011) pp. 127-134. doi : 10.1016/j.anihpc.2010.11.004. http://gdmltest.u-ga.fr/item/AIHPC_2011__28_1_127_0/
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