Scattering by two convex bodies
Sur la décroissance d’énergie locale du problème extérieur avec plusieurs obstacles strictement convexes
On zeta function and scattering poles for several convex bodies
On the poles of the scattering matrix for two convex obstacles
On poles of scattering matrices for several convex bodies
Decay of solutions of the wave equation in the exterior of several convex bodies
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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