High frequency limit of Helmholtz equations: the case of a discontinuous index
Elise Fouassier (2006)
Journées Équations aux dérivées partielles
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In this text, we compute the high frequency limit of the Hemholtz equation with source term, in the case of a refraction index that is discontinuous along a sharp interface between two unbounded media. The asymptotic propagation of energy is studied using Wigner measures.