A multi-scale Gaussian beam parametrix for the wave equation: The Dirichlet boundary value problem
Journal of Differential Equations(2022)
摘要
We present a construction of a multi-scale Gaussian beam parametrix for the Dirichlet boundary value problem associated with the wave equation, and study its convergence rate to the true solution in the highly oscillatory regime. The construction elaborates on the wave-atom parametrix of Bao, Qian, Ying, and Zhang and extends to a multi-scale setting the technique of Gaussian beam propagation from a boundary of Katchalov, Kurylev and Lassas.
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关键词
35L05,35L20,35S05,42C15
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