• Corpus ID: 235417186

The Analysis of Bulk Boundary Correspondence under the Singularity of the Generalized Brillouin Zone in Non-Hermitian System

@inproceedings{Guo2021TheAO,
  title={The Analysis of Bulk Boundary Correspondence under the Singularity of the Generalized Brillouin Zone in Non-Hermitian System},
  author={Gang-Feng Guo and Xi-Xi Bao and Lei Tan},
  year={2021}
}
The generalized Brillouin zone (GBZ), which is the core concept of the non-Bloch band theory to rebuild the bulk boundary correspondence in the non-Hermitian topology, appears as a closed loop generally. In this work, we find that even if the GBZ itself collapses into a point, the recovery of the open boundary energy spectrum by the continuum bands remains unchanged. Contrastively, if the bizarreness of the GBZ occurs, the winding number will become illness. Namely, we find that the bulk… 
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References

Topological Insulators: Dirac Equation in Condensed Matters
From the Contents: Introduction.- Starting from the Dirac equation.- Minimal lattice model for topological insulator.- Topological invariants.- Topological phases in one dimension.- Quantum spin Hall