Spinor wave equation of photon
  In this paper, we give the spinor wave equations of free and unfree photon, which are the differential equation of space-time one order. For the free photon, the spinor wave equations are covariant, and the spinors $\psi$ are corresponding to the the reducibility representations $D^{10}+D^{01}$ and $D^{10}+D^{01}+D^{1/2 1/2}$ of the proper Lorentz group. 
Xiang-Yao Wu, Bo-Jun Zhang, Xiao-Jing Liu, Si-Qi Zhang, Jing Wang,   Hong Li, Xi-Hui Fan and Jing-Wu Li
physics.gen-ph quant-ph