Topological characterization of non-Hermitian multiband systems using Majorana's Stellar Representation

19 May 2020 Teo Wei Xin Li Linhu Zhang Xizheng Gong Jiangbin

For topological characterization of non-Hermitian multiband systems, Majorana's stellar representation (MSR) is applied to 1D multiband models consisting of asymmetric nearest-neighbor hopping and imaginary on-site potentials. The number of edge states isolated from the continuous bulk bands in the complex energy plane is successfully linked with a topological invariant constructed from MSR... (read more)

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Categories


  • MESOSCALE AND NANOSCALE PHYSICS
  • QUANTUM PHYSICS