Exotic Non-Abelian Topological Defects in Lattice Fractional Quantum Hall States.

  title={Exotic Non-Abelian Topological Defects in Lattice Fractional Quantum Hall States.},
  author={Zhao Liu and Gunnar M{\"o}ller and Emil J. Bergholtz},
  journal={Physical review letters},
  volume={119 10},
We investigate extrinsic wormholelike twist defects that effectively increase the genus of space in lattice versions of multicomponent fractional quantum Hall systems. Although the original band structure is distorted by these defects, leading to localized midgap states, we find that a new lowest flat band representing a higher genus system can be engineered by tuning local single-particle potentials. Remarkably, once local many-body interactions in this new band are switched on, we identify… Expand
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