Quantum Hall Effect and Dyson-Swinger Equation
  In this paper we make attempt to obtain a description of the Quantum Hall Effect (both integer and fractional) by means of electron's Green functions of three-dimensional (planar) electrodynamics. We show that expression for the free electron propagator yields an integer number for the second Chern-Simons term, that corresponds to the quantized Hall conductivity in the approximation of non-interacting particles for integer filling factors, when there exists a gap for all excitations in the system. Then we try to check correspondence between fractional case and "interacting" Green functions, so it requires taking into consideration "full-fledged" propagators, including interactions. We are going to obtain them from Dyson-Swinger equations. We attempt to reach out from the perturbation theory regime using a specific method, called scale approximation. Our solutions are found in general gauge. 
Podist A. Kurashvili