1209.5460 (Jing Yu et al.)

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

Jing Yu, Xing-Hai Zhang, Su-Peng Kou

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.

View original: http://arxiv.org/abs/1209.5460