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Physics  2012 

Majorana Edge States for Z2 Topological Orders of the Wen-plaquette Model and the Toric-code Model

DOI: 10.1103/PhysRevB.87.184402

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Abstract:

In this paper we study the symmetry protected Majorana edge states for the Z2 topological order of the Wen-plaquette model and the toric-code model and calculate the dispersion of the Majorana edge states. For the system with translational symmetry, the Majorana edge states are gapless and have the nodal points at k=0 and k=pi. For the edge states of the toric-code model without translational symmetry, the edge modes become gapped.

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