Abstract
This paper is concerned with the construction of a quasimode for the Laplace operator in a bounded domain Ω in R n , n ≥ 2, with a Dirichlet (Neumann) boundary condition. The quasimode is associated either with a closed gliding ray on the boundary or with a closed broken ray in T*Ω. The frequency set of the quasimode consists of the conic hull of the union of the bicharacteristics of the cosphere bundle S*Ω issuing from a family of invariant tori of the billiard ball map. To construct a quasimode near a gliding ray we find a global symplectic normal form for a pair of glancing hypersurfaces.
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© 1991 Springer-Verlag New York, Inc.
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Popov, G.S. (1991). Quasimodes for the Laplace Operator and Glancing Hypersurfaces. In: Beals, M., Melrose, R.B., Rauch, J. (eds) Microlocal Analysis and Nonlinear Waves. The IMA Volumes in Mathematics and its Applications, vol 30. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-9136-4_12
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DOI: https://doi.org/10.1007/978-1-4613-9136-4_12
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