Field Theory of the Random Flux Model
arXiv:cond-mat/9811134 · doi:10.1088/0305-4470/32/31/101
Abstract
The long-range properties of the random flux model (lattice fermions hopping under the influence of maximally random link disorder) are shown to be described by a supersymmetric field theory of non-linear sigma model type, where the group GL(n|n) is the global invariant manifold. An extension to non-abelian generalizations of this model identifies connections to lattice QCD, Dirac fermions in a random gauge potential, and stochastic non-Hermitian operators.
4 pages, 1 eps figure
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