Emergent Symmetry and Phase Transitions on the Domain Wall of ${\mathbb{Z}}_2$ Topological Orders

Hong-Hao Song, Chen Peng, Rui-Zhen Huang +1

The one-dimensional (1D) domain wall of 2D ${\mathbb{Z}}_2$ topological orders is studied theoretically. The Ising domain wall model is shown to have an emergent SU(2)${}_1$ confor…