Exotic phase diagram of a topological quantum system
Statistical Mechanics
2015-05-19 v2 Quantum Physics
Abstract
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.
Keywords
Cite
@article{arxiv.1007.4050,
title = {Exotic phase diagram of a topological quantum system},
author = {Xiao-Feng Shi and Yan Chen and J. Q. You},
journal= {arXiv preprint arXiv:1007.4050},
year = {2015}
}
Comments
10 pages, 5 figures