Reduced fidelity in topological quantum phase transitions
Strongly Correlated Electrons
2009-06-11 v3 Statistical Mechanics
Quantum Physics
Abstract
We study the reduced fidelity between local states of lattice systems exhibiting topological order. By exploiting mappings to spin models with classical order, we are able to analytically extract the scaling behavior of the reduced fidelity at the corresponding quantum phase transitions out of the topologically ordered phases. Our results suggest that the reduced fidelity, albeit being a local measure, generically serves as a faithful marker of a topological quantum phase transition.
Cite
@article{arxiv.0902.3848,
title = {Reduced fidelity in topological quantum phase transitions},
author = {Erik Eriksson and Henrik Johannesson},
journal= {arXiv preprint arXiv:0902.3848},
year = {2009}
}
Comments
4 pages, 2 figures; published version