# Delocalization of 2D Dirac Fermions: the Role of a Broken Supersymmetry

Source: [Delocalization of 2D Dirac Fermions: the Role of a Broken Supersymmetry](<https://www.sota2.com/research/paper/68fa24692c2a3760193a3c14>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T09:09:53.973Z

Authors: K. Ziegler

Published: 1997-11-11T18:21:57.000Z

## Abstract

The mechanism of delocalization of two-dimensional Dirac fermions with random mass is investigated, using a superfield representation. Although localization effects are very strong, one fermion component can delocalize due to the spontaneous breaking of a special supersymmetry of the model. The delocalized fermion has a non-singular density of states and is decribed by a diffusion propagator. Supersymmetry is restored if the mean of the random mass is sufficiently large. This is accompanied by a critical boson component.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/cond-mat/9711097>)

[PDF](<https://arxiv.org/pdf/cond-mat/9711097.pdf>)