A tensor network algorithm computes momentum-resolved spectral functions for large non-periodic super-moiré systems by mapping tight-binding problems to solvable quantum many-body simulations using kernel polynomial methods and quantum Fourier transforms.
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Bipartite non-Hermitian lattices support exceptional flat bands that arise from sublattice degeneracy mismatch and persist beyond exceptional points with biorthogonal modes spanning both sublattices.
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Tensor network approach to momentum-resolved spectroscopy in non-periodic super-moir\'e systems
A tensor network algorithm computes momentum-resolved spectral functions for large non-periodic super-moiré systems by mapping tight-binding problems to solvable quantum many-body simulations using kernel polynomial methods and quantum Fourier transforms.
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Exceptional flat bands in bipartite non-Hermitian lattices
Bipartite non-Hermitian lattices support exceptional flat bands that arise from sublattice degeneracy mismatch and persist beyond exceptional points with biorthogonal modes spanning both sublattices.