Non-equilibrium Fractional Hall Response After a Topological Quench
Quantum Gases
2016-11-11 v2 Mesoscale and Nanoscale Physics
Abstract
We theoretically study the Hall response of a lattice system following a quench where the topology of a filled band is suddenly changed. In the limit where the physics is dominated by a single Dirac cone, we find that the change in the Hall conductivity is two-thirds of the quantum of conductivity. We explore this universal behavior in the Haldane model, and discuss cold-atom experiments for its observation. Beyond linear response, the Hall effect crosses over from fractional to integer values. We investigate finite-size effects, and the role of the harmonic confinement.
Keywords
Cite
@article{arxiv.1608.04395,
title = {Non-equilibrium Fractional Hall Response After a Topological Quench},
author = {F. Nur Ünal and Erich J. Mueller and M. Ö. Oktel},
journal= {arXiv preprint arXiv:1608.04395},
year = {2016}
}
Comments
Updated reference list, minor revisions