Influence of Fermion Velocity Renormalization on Dynamical Mass   Generation in QED$_3$
  We study dynamical fermion mass generation in (2+1)-dimensional quantum electrodynamics with a gauge field coupling to massless Dirac fermions and non-relativistic scalar bosons. We calculate the fermion velocity renormalization and then examine its influence on dynamical mass generation by using the Dyson-Schwinger equation. It is found that dynamical mass generation takes place even after including the scalar bosons as long as the bosonic compressibility parameter $\xi$ is sufficiently small. In addition, the fermion velocity renormalization enhances the dynamically generated mass. 
Hao-Ran Chang, Jing-Rong Wang and Jing Wang
cond-mat.supr-con hep-ph