Delocalization of relativistic Dirac particles in disordered one-dimensional systems and its implementation with cold atoms
Abstract
We study theoretically the localization of relativistic particles in disordered one-dimensional chains. It is found that the relativistic particles tend to dislocation in comparison with the non-relativistic particles with the same disorder strength. More intriguingly, we reveal that the massless Dirac particles are entirely delocalized for any energy due to the inherent chiral symmetry, leading to a well-known result that particles are always localized in one-dimensional system for arbitrary weak disorders to break down. Furthermore, we propose a feasible scheme to simulate and detect the delocalization feature of the Dirac particles with cold atoms..
Cite
@article{arxiv.0810.0795,
title = {Delocalization of relativistic Dirac particles in disordered one-dimensional systems and its implementation with cold atoms},
author = {Shi-Liang Zhu and Dan-Wei Zhang and Z. D. Wang},
journal= {arXiv preprint arXiv:0810.0795},
year = {2009}
}
Comments
The version to be published in Phys. Rev. Lett.. many typos corrected; the suggested experiment was clarified;