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Asymptotic Expansions for the Transmission Eigenvalues of Periodic Scatterers of Bounded Support
Journal article   Peer reviewed

Asymptotic Expansions for the Transmission Eigenvalues of Periodic Scatterers of Bounded Support

Fioralba Cakoni and Shari Moskow
Asymptotic analysis
13 Jan 2026

Abstract

Mathematics, Applied Science & Technology Mathematics Physical Sciences
We consider the transmission eigenvalues for a bounded scatterer with a periodically varying index of refraction, and derive the first-order corrections to the limiting transmission eigenvalues. We assume the scatterer contrast to be of one sign, in which case the transmission eigenvalue problem can be written in terms of operators corresponding to a fourth-order partial differential equation with periodic coefficients. We perform two scale asymptotics for this biharmonic-type homogenization problem and show convergence estimates, which require a boundary corrector function, and this boundary corrector function appears in the formula for the transmission eigenvalues correction.

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Collaboration types
Domestic collaboration
Web of Science research areas
Mathematics, Applied
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