Corrections to the self-consistent Born approximation for Weyl fermions
Disordered Systems and Neural Networks
2017-11-01 v2
Abstract
The average density of states of two- and three-dimensional Weyl fermions is studied in the self-consistent Born approximation (SCBA) and its corrections. The latter have been organized in terms of a 1/N expansion. It turns out that an expansion in terms of the disorder strength is not applicable, as previously mentioned by other authors. Nevertheless, the 1/N expansion provides a justification of the SCBA as the large N limit of Weyl fermions.
Cite
@article{arxiv.1707.05595,
title = {Corrections to the self-consistent Born approximation for Weyl fermions},
author = {A. Sinner and K. Ziegler},
journal= {arXiv preprint arXiv:1707.05595},
year = {2017}
}
Comments
12 pages, 4 figures, Phys. Rev. B (2017)