Wavenumber-explicit stability and convergence analysis of ℎ finite element discretizations of Helmholtz problems in piecewise smooth media

We present a wavenumber-explicit convergence analysis of the h p hp Finite Element Method applied to a class of heterogeneous Helmholtz problems with piecewise analytic coefficients at large wavenumber k k . Our analysis covers the heterogeneous Helmholtz equation with Robin, exact Dirichlet-to-Neumann, and second order absorbing boundary conditions, as well as perfectly matched layers.