Momentum polarization of non-Abelian topologically ordered states

ORAL

Abstract

We study momentum polarization of non-Abelian topologically ordered states for the Gutzwiller projected Chern insulator wave function with Chern number C=2. The resulting quasiparticle topological spin and edge central charge confirm the field theory description of an SU(2) gauge field coupled to $\nu=2$ fermions and rule out other candidate theories. We also discuss characteristic differences and the quantum phase transition between this non-Abelian topological phase and an Abelian topological phase described by the projected wave function of two C=1 Chern insulators.

Authors

  • Yi Zhang

    Stanford University

  • Xiao-liang Qi

    Stanford University