Abstract:
The spectrum of the Dirichlet problem for the Laplace operator in a plane T-shaped waveguide is investigated. The critical width of the half-strip branch is determined such that, if the width is greater, the waveguide has no discrete spectrum. The existence of a critical width is proved the oretically.
Citation:
S. A. Nazarov, A. V. Shanin, “Calculation of characteristics of trapped modes in T-shaped waveguides”, Zh. Vychisl. Mat. Mat. Fiz., 51:1 (2011), 104–119; Comput. Math. Math. Phys., 51:1 (2011), 96–110