In a generalized non-Hermitian Rice-Mele model, next-nearest-neighbor hopping leaves exceptional-point loci unchanged under periodic boundaries but shifts existing points and creates new ones under open boundaries, producing size-dependent degeneracies and a boundary-specific topological gap-closing
Gong , author Y
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A coefficient-based approach derives analytical phase boundaries and higher winding numbers in 1D non-Hermitian topological superconductors, verified via open-boundary spectra and disorder stability.
Coupling a skin-localized non-Hermitian chain to a delocalized chain induces a pseudo mobility edge in complex energy that separates localized and extended states, with a quantized winding number characterizing transitions under mixed boundary conditions.
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Exceptional by Design: Long-Range Hopping as a Knob for Exceptional Point Control
In a generalized non-Hermitian Rice-Mele model, next-nearest-neighbor hopping leaves exceptional-point loci unchanged under periodic boundaries but shifts existing points and creates new ones under open boundaries, producing size-dependent degeneracies and a boundary-specific topological gap-closing
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Higher-winding phases in one-dimensional non-Hermitian topological superconductors
A coefficient-based approach derives analytical phase boundaries and higher winding numbers in 1D non-Hermitian topological superconductors, verified via open-boundary spectra and disorder stability.
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Non-Hermitian pseudo mobility edge in a coupled chain system
Coupling a skin-localized non-Hermitian chain to a delocalized chain induces a pseudo mobility edge in complex energy that separates localized and extended states, with a quantized winding number characterizing transitions under mixed boundary conditions.