Existence of Friedrich-Wintgen Bound States in the Continuum: Cavity with a Thin Waveguide Opening.

Jiaxin Zhou Wangtao Lu Ya Yan Lu Existence of Friedrich-Wintgen Bound States in the Continuum: Cavity with a Thin Waveguide Opening. 2026 1375-1402 86 SIAM J. Appl. Math. 4 https://doi.org/10.1137/25m1760817 db/journals/siamam/siamam86.html#ZhouLL26 streams/journals/siamam