COMMENT ON: NONZERO FERMI LEVEL DENSITY OF STATES FOR A DISORDERED D-WAVE SUPERCONDUCTOR IN TWO DIMENSIONS. AUTHORS' REPLY

In their paper Ziegler et al. claim that the model of 2D Dirac fermions in a random gauge potential has a finite density of states at zero energy. We point out that the approach used in this paper fails to reproduce the perturbation theory results for this problem.