Abstract
We display here a new trace formula in scattering for obstacles problems. Applications are given for asymptotics of the scattering phase. In particular we prove a Weyl type formula for exterior problems in acoustical scattering for any dimension, extending a result proved by R. Melrose in odd dimension. More generally, we prove that theses results hold for a large class of perturbations of operators elliptic at infinity which may be degenerated in a bounded set.
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Robert, D. (1994). A Trace Formula for Obstacles Problems and Applications. In: Demuth, M., Exner, P., Neidhardt, H., Zagrebnov, V. (eds) Mathematical Results in Quantum Mechanics. Operator Theory: Advances and Applications, vol 70. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-8545-4_34
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DOI: https://doi.org/10.1007/978-3-0348-8545-4_34
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