Gaussian approximation of the (2+1) dimensional Thirring model in the   functional Schr\"{o}dinger picture
  The (2+1)-dimensional Thirring model is studied by using the Gaussian approximation method in the functional Schr\"odinger picture. Although the dynamical symmetry breaking does not occur in the large N limit, it does occur in the Gaussian approximation which includes the higher order contributions in 1/N. 
S.J. Hyun, G.H. Lee and J.H. Yee