Generalized Brillouin zones in non-Hermitian 1D models can become disconnected with more connected components than bands from point-gap features, allowing line gaps to close without altering point-gap topology.
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Topology of the generalized Brillouin zone of one-dimensional models
Generalized Brillouin zones in non-Hermitian 1D models can become disconnected with more connected components than bands from point-gap features, allowing line gaps to close without altering point-gap topology.