[Estimations de dispersion pour l'équation des ondes et de Schrödinger à l'extérieur des obstacles strictement convexes et contre-exemples]
L'objet de cette note est de démontrer des estimations de dispersion pour l'équation des ondes et de Schrödinger à l'extérieur d'un obstacle strictement convexe de . Si , on démontre que, pour chacune des deux équations, le flot linéaire vérifie les estimations de dispersion comme dans . En dimension plus grande , on démontre que des pertes dans la dispersion apparaissent à l'extérieur d'une boule de et que cela arrive au point de Poisson.
The purpose of this note is to prove dispersive estimates for the wave and the Schrödinger equations outside strictly convex obstacles in . If , we show that, for both equations, the linear flow satisfies the (corresponding) dispersive estimates as in . In higher dimensions and if the domain is the exterior of a ball in , we show that losses in dispersion do appear and this happens at the Poisson spot.
Accepté le :
Publié le :
Oana Ivanovici 1 ; Gilles Lebeau 2
@article{CRMATH_2017__355_7_774_0, author = {Oana Ivanovici and Gilles Lebeau}, title = {Dispersion for the wave and the {Schr\"odinger} equations outside strictly convex obstacles and counterexamples}, journal = {Comptes Rendus. Math\'ematique}, pages = {774--779}, publisher = {Elsevier}, volume = {355}, number = {7}, year = {2017}, doi = {10.1016/j.crma.2017.05.011}, language = {en}, }
TY - JOUR AU - Oana Ivanovici AU - Gilles Lebeau TI - Dispersion for the wave and the Schrödinger equations outside strictly convex obstacles and counterexamples JO - Comptes Rendus. Mathématique PY - 2017 SP - 774 EP - 779 VL - 355 IS - 7 PB - Elsevier DO - 10.1016/j.crma.2017.05.011 LA - en ID - CRMATH_2017__355_7_774_0 ER -
%0 Journal Article %A Oana Ivanovici %A Gilles Lebeau %T Dispersion for the wave and the Schrödinger equations outside strictly convex obstacles and counterexamples %J Comptes Rendus. Mathématique %D 2017 %P 774-779 %V 355 %N 7 %I Elsevier %R 10.1016/j.crma.2017.05.011 %G en %F CRMATH_2017__355_7_774_0
Oana Ivanovici; Gilles Lebeau. Dispersion for the wave and the Schrödinger equations outside strictly convex obstacles and counterexamples. Comptes Rendus. Mathématique, Volume 355 (2017) no. 7, pp. 774-779. doi : 10.1016/j.crma.2017.05.011. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/j.crma.2017.05.011/
[1] O. Ivanovici, G. Lebeau, Dispersion for the wave and the Schrödinger equations outside strictly convex obstacles and counterexamples, preprint, 2017.
[2] Global well-posedness and scattering for defocusing energy-critical NLS in the exterior of balls with radial data, Math. Res. Lett., Volume 19 (2012) no. 1, pp. 213-232
Cité par Sources :
☆ The authors were partially supported by ERC project SCAPDE (grant 320845). The authors would like to thank Centro di Giorgi, Pisa for the warm welcome during the summer 2015 when this article has started.
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