The paper derives an analytical phase diagram for a 2D stacked non-Hermitian SSH model and shows that open-boundary-only Dirac points with integer topological charge and geometry-dependent locations exist.
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Non-Bloch Dirac Points and Phase Diagram in the Stacked Non-Hermitian SSH Model
The paper derives an analytical phase diagram for a 2D stacked non-Hermitian SSH model and shows that open-boundary-only Dirac points with integer topological charge and geometry-dependent locations exist.