  We study the time evolution of the Optical Spin Hall Effect (OSHE), which
occurs when exciton-polaritons undergo resonant Rayleigh scattering. The
resulting spin pattern in momentum space is quantified by calculating the
degree of circular polarization of the momentum space image for each point in
time. We find the degree of circular polarization performing oscillations,
which can be described within the framework of the pseudospin model by Kavokin
et al. (Ref. 1).
