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Detection of Symmetry Enriched Topological Phases
Ching-Yu Huang, Xie Chen, Frank Pollmann
Topologically ordered systems in the presence of symmetries can exhibit new structures which are referred to as symmetry enriched topological (SET) phases. We introduce simple meth…
Symmetry protected topological phases from decorated domain walls
Xie Chen, Yuan-Ming Lu, Ashvin Vishwanath
Symmetry protected topological (SPT) phases with unusual edge excitations can emerge in strongly interacting bosonic systems and are classified in terms of the cohomology of their…
Critical theories of phase transition between symmetry protected topological states and their relation to the gapless boundary theories
Xie Chen, Fa Wang, Yuan-Ming Lu +1
Symmetry protected topological states (SPTs) have the same symmetry and the phase transition between them are beyond Landau's symmetry breaking formalism. In this paper we study (1…
Symmetry protected topological orders in interacting bosonic systems
Xie Chen, Zheng-Cheng Gu, Zheng-Xin Liu +1
Symmetry protected topological (SPT) states are bulk gapped states with gapless edge excitations protected by certain symmetries. The SPT phases in free fermion systems, like topol…