On-site potentials in a 2D non-Hermitian SSH lattice can selectively force real energy spectra under periodic or open boundary conditions, with a line-gap-closing transition at theta = pi/4.
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Topological Reality Switch: Towards Bulk-Boundary Selective Lasing
On-site potentials in a 2D non-Hermitian SSH lattice can selectively force real energy spectra under periodic or open boundary conditions, with a line-gap-closing transition at theta = pi/4.