The spectrum of the Steklov-Helmholtz operator

Nilima Nigam, Kshitij Patil, Weiran Sun

We present a wavenumber-robust strategy for computing Steklov eigenpairs of the Helmholtz operator $-\Delta -{\mu }^2$. As the wavenumber $\mu \to {\mu }_D$ from below (where ${\mu }_D^2$ is a Di…