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arXiv · 1707.05595

Corrections to the self-consistent Born approximation for Weyl fermions

A. Sinner·K. Ziegler
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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.

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A. Sinner, K. Ziegler. 2017-10-16. Corrections to the self-consistent Born approximation for Weyl fermions. https://doi.org/10.1103/physrevb.96.165140

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