A mean field approach for string condensed states
Strongly Correlated Electrons
2009-11-11 v1
Abstract
We describe a mean field technique for quantum string (or dimer) models. Unlike traditional mean field approaches, the method is general enough to include string condensed phases in addition to the usual symmetry breaking phases. Thus, it can be used to study phases and phases transitions beyond Landau's symmetry breaking paradigm. We demonstrate the technique with a simple example: the spin-1 XXZ model on the Kagome lattice. The mean field calculation predicts a number of phases and phase transitions, including a z=2 deconfined quantum critical point.
Cite
@article{arxiv.cond-mat/0611031,
title = {A mean field approach for string condensed states},
author = {Michael Levin and Xiao-Gang Wen},
journal= {arXiv preprint arXiv:cond-mat/0611031},
year = {2009}
}
Comments
10 pages + appendix, 15 figures