Electromagnetic Waves in a Model with Chern-Simons Potential
  We investigate the appearance of Chern-Simons terms in electrodynamics at the surface/interface of materials. The requirement of locality, gauge invariance and renormalizability in this model is imposed. Scattering and reflection of electromagnetic waves in three different homogeneous layers of media is determined. Snell's law is preserved. However, the transmission and reflection coefficient depend on the strength of the Chern-Simons interaction, and parallel and perpendicular components are mixed. 
D.Yu. Pis'mak, Yu.M. Pis'mak, F. J. Wegner
hep-th cond-mat.mes-hall cond-mat.mtrl-sci quant-ph