Effects of Anisotropy in (2+1)-dimensional QED
  We summarize our results for the impact of anisotropic fermionic velocities in (2+1)-dimensional QED on the critical number of fermion flavors, N^c_f, and dynamical mass generation. We apply different approximation schemes for the gauge boson vacuum polarization and the fermion-boson vertex to analyze the according Dyson-Schwinger equations in a finite volume. Our results point towards large variations of N^c_f away from the isotropic point in agreement with other approaches. 
J. A. Bonnet, C. S. Fischer and R. Williams
hep-ph cond-mat.supr-con