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On vanishing and localizing around corners of electromagnetic transmission resonances

Author

Listed:
  • Huaian Diao

    (Jilin University)

  • Hongyu Liu

    (City University of Hong Kong)

  • Xianchao Wang

    (Harbin Institute of Technology)

  • Ke Yang

    (Northeast Normal University)

Abstract

We are concerned with the geometric properties of the transmission resonance in electromagnetic scattering. The transmission eigenvalue problem is a type of non-elliptic and non-selfadjoint spectral problem which connects to electromagnetic scattering in many aspects in a delicate and intriguing way. It is shown in (Anal PDE, 2020) under a Hölder regularity assumption that the transmission eigenfunctions vanish around a corner. In this paper, we make two novel contributions to this emerging topic. First, we establish the vanishing property under a different regularity criterion in terms of the Herglotz wave approximation which covers more general functions. Second, through extensive numerical experiments, we verify the vanishing property and moreover, we show the transmission eigenfunctions exhibit a certain localising/concentrating phenomenon around the corner, especially in the concave case.

Suggested Citation

  • Huaian Diao & Hongyu Liu & Xianchao Wang & Ke Yang, 2021. "On vanishing and localizing around corners of electromagnetic transmission resonances," Partial Differential Equations and Applications, Springer, vol. 2(6), pages 1-20, December.
    • Handle: RePEc:spr:pardea:v:2:y:2021:i:6:d:10.1007_s42985-021-00131-6
    DOI: 10.1007/s42985-021-00131-6
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