Non-Hermitian models built from a bipartite parent have p-th-root energy bands; with an SSH parent, their single-particle levels equal those of free parafermions.
Kato,Perturbation Theory for Linear Operators (Springer, New York, 1966)
3 Pith papers cite this work. Polarity classification is still indexing.
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Replacing interferometer beam splitters with non-Hermitian resonators makes the device acquire a collective multimode exceptional point whose dark-fringe response to arm perturbations is non-analytic.
A Morse-theoretic topological index defined on the imaginary part of non-Hermitian spectra is shown to count Fermi points and fix the effective central charge of the non-equilibrium steady state.
citing papers explorer
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Nonparametric learning of stochastic differential equations from sparse and noisy data
Non-Hermitian models built from a bipartite parent have p-th-root energy bands; with an SSH parent, their single-particle levels equal those of free parafermions.
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Non-Hermitian multimode interferometry
Replacing interferometer beam splitters with non-Hermitian resonators makes the device acquire a collective multimode exceptional point whose dark-fringe response to arm perturbations is non-analytic.
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Spectral-topology-induced criticality in non-Hermitian fermionic metals
A Morse-theoretic topological index defined on the imaginary part of non-Hermitian spectra is shown to count Fermi points and fix the effective central charge of the non-equilibrium steady state.