Deterministic and Monte Carlo codes for multiple scattering photon transport with arbitrary polarization states

The Boltzmann–Chandrasekhar vector equation is the best model known for describing the diffusion of incoherent photon beams with arbitrary polarization state. A brief comparison of the transport equations (scalar and vector) is presented. Then, the state-of-the-art of the transport codes developed at Bologna based on these models is described. Finally, the application of these codes is illustrated with examples.