%0 Journal Article
%T Exotic phase diagram of a topological quantum system
%A Xiao-Feng Shi
%A Yan Chen
%A J. Q. You
%J Physics
%D 2010
%I arXiv
%R 10.1103/PhysRevB.82.174412
%X We study the quantum phase transitions (QPTs) in the Kitaev spin model on a triangle-honeycomb lattice. In addition to the ordinary topological QPTs between Abelian and non-Abelian phases, we find new QPTs which can occur between two phases belonging to the same topological class, namely, either two non-Abelian phases with the same Chern number or two Abelian phases with the same Chern number. Such QPTs result from the singular behaviors of the nonlocal spin-spin correlation functions at the critical points.
%U http://arxiv.org/abs/1007.4050v2