no. 2
Decay of solutions of the wave equation in the exterior of several convex bodies
Annales de l'Institut Fourier, Tome 38 (1988) no. 2, pp. 113-146.

On étudie la décroissance des solutions de l’équation des ondes dans l’extérieur de plusieurs objets strictement convexes. Une condition suffisante pour décroissance exponentielle d’énergie locale est exprimée en terme de période et d’application de Poincaré des rayons périodiques dans le domaine extérieur..

We study the decay of solutions to the wave equation in the exterior of several strictly convex bodies. A sufficient condition for exponential decay of the local energy is expressed in terms of the period and the Poincare map of periodic rays in the exterior domain.

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     author = {Ikawa, Mitsuru},
     title = {Decay of solutions of the wave equation in the exterior of several convex bodies},
     journal = {Annales de l'Institut Fourier},
     pages = {113--146},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {38},
     number = {2},
     year = {1988},
     doi = {10.5802/aif.1137},
     mrnumber = {90a:35028},
     zbl = {0636.35045},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/aif.1137/}
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Ikawa, Mitsuru. Decay of solutions of the wave equation in the exterior of several convex bodies. Annales de l'Institut Fourier, Tome 38 (1988) no. 2, pp. 113-146. doi : 10.5802/aif.1137. http://archive.numdam.org/articles/10.5802/aif.1137/

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