Passage of radiation through wormholes of arbitrary shape

@article{Konoplya2010PassageOR,
  title={Passage of radiation through wormholes of arbitrary shape},
  author={R. A. Konoplya and Alexander Zhidenko},
  journal={Physical Review D},
  year={2010},
  volume={81},
  pages={124036}
}
We study quasinormal modes and scattering properties via calculation of the $S$ matrix for scalar and electromagnetic fields propagating in the background of spherically symmetric and axially symmetric traversable Lorentzian wormholes of a generic shape. Such wormholes are described by the general Morris-Thorne ansatz. The properties of quasinormal ringing and scattering are shown to be determined by the behavior of the wormhole's shape function $b(r)$ and shift factor $\ensuremath{\Phi}(r… 
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