Reports discovery of exceptional deficiency (ED) featuring coalescence of high-dimensional eigenspaces and spectral continua in non-Hermitian lattices, inducing anomalous non-Hermitian skin effect behaviors observed experimentally in active mechanical systems.
Greenโs function at ED The steady-state response is obtained using the frequency-domain Greenโs function ๐(๐)=(๐๐โ๐)โ1, ( S10) 11 where ๐ is the angular frequency of excitation [2]
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Exceptional deficiency of non-Hermitian systems
Reports discovery of exceptional deficiency (ED) featuring coalescence of high-dimensional eigenspaces and spectral continua in non-Hermitian lattices, inducing anomalous non-Hermitian skin effect behaviors observed experimentally in active mechanical systems.