Galerkin method with infinite elements for complex-scaled Helmholtz problems achieves super-algebraic radial convergence and outperforms PML.
Hardy space infinite elements for time harmonic wave equations with phase and group velocities of different signs
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Complex scaled infinite elements for exterior Helmholtz problems
Galerkin method with infinite elements for complex-scaled Helmholtz problems achieves super-algebraic radial convergence and outperforms PML.