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Recursive integral method for transmission eigenvalues
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DOI：10.1016/j.jcp.2016.10.001.png)
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Abstract
En 中文
Transmission eigenvalue problems arise from inverse scattering theory for inhomogeneous media. These non-selfadjoint problems are numerically challenging because of a complicated spectrum. In this paper, we propose a novel recursive contour integral method for matrix eigenvalue problems from finite element discretizations of transmission eigenvalue problems. The technique tests (using an approximate spectral projection) if a region contains eigenvalues. Regions that contain eigenvalues are subdivided and tested recursively until eigenvalues are isolated with a specified precision. The method is fully parallel and requires no a priori spectral information. Numerical examples show the method is effective and robust. (C) 2016 Elsevier Inc. All rights reserved.
Keywords:
Transmission eigenvalues
Spectral projection
Eigenvalue problems
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