Dirac particles, spin and photons

Alexander D. Popov

We describe relativistic particles with spin as points moving in phase space $X=T^{\ast }{R}^{1,3}\times C_L^2\times C_R^2$, where $T^{\ast }{R}^{1,3}=R^{1,3}\times R^{1,3}$ is the space of coor…