Winding number order in the Haldane model with interactions
Strongly Correlated Electrons
2016-03-31 v1 Quantum Gases
Quantum Physics
Abstract
We study the Haldane model with nearest-neighbor interactions. This model is physically motivated by the associated ultracold atoms implementation. We show that the topological phase of the interacting model can be characterized by a physically observable winding number. The robustness of this number extends well beyond the topological insulator phase towards attractive and repulsive interactions that are comparable to the kinetic energy scale of the model. We identify and characterize the relevant phases of the model.
Cite
@article{arxiv.1505.00374,
title = {Winding number order in the Haldane model with interactions},
author = {Emilio Alba and Jiannis Pachos and Juan Jose Garcia-Ripoll},
journal= {arXiv preprint arXiv:1505.00374},
year = {2016}
}