Non-Hermitian Boundary Modes and Topology.

  title={Non-Hermitian Boundary Modes and Topology.},
  author={Dan S. Borgnia and A. Kruchkov and Robert-Jan Slager},
  journal={Physical review letters},
  volume={124 5},
  • Dan S. Borgnia, A. Kruchkov, Robert-Jan Slager
  • Published 2020
  • Mathematics, Medicine, Physics
  • Physical review letters
  • We consider conditions for the existence of boundary modes in non-Hermitian systems with edges of arbitrary codimension. Through a universal formulation of formation criteria for boundary modes in terms of local Green's functions, we outline a generic perspective on the appearance of such modes and generate corresponding dispersion relations. In the process, we explain the skin effect in both topological and nontopological systems, exhaustively generalizing bulk-boundary correspondence to… CONTINUE READING
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