On the properties of quasi-periodic boundary integral operators for the Helmholtz equation

R Aylwin, C Jerez-Hanckes, J Pinto - Integral Equations and Operator …, 2020 - Springer
Integral Equations and Operator Theory, 2020Springer
We study the mapping properties of boundary integral operators arising when solving two-
dimensional, time-harmonic waves scattered by periodic domains. For domains assumed to
be at least Lipschitz regular, we propose a novel explicit representation of Sobolev spaces
for quasi-periodic functions that allows for an analysis analogous to that of Helmholtz
scattering by bounded objects. Except for Rayleigh-Wood frequencies, continuity and
coercivity results are derived to prove wellposedness of the associated first kind boundary …
Abstract
We study the mapping properties of boundary integral operators arising when solving two-dimensional, time-harmonic waves scattered by periodic domains. For domains assumed to be at least Lipschitz regular, we propose a novel explicit representation of Sobolev spaces for quasi-periodic functions that allows for an analysis analogous to that of Helmholtz scattering by bounded objects. Except for Rayleigh-Wood frequencies, continuity and coercivity results are derived to prove wellposedness of the associated first kind boundary integral equations.
Springer
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