  The investigation of spin and polarization effects in ultra-high intensity
laser-plasma and laser-beam interactions has become an emergent topic in
high-field science recently. In this paper we derive a relativistic kinetic
description of spin-polarized plasmas, where QED effects are taken into account
via Boltzmann-type collision operators under the local constant field
approximation. The emergence of anomalous precession is derived from one-loop
self-energy contributions in a strong background field. We are interested, in
particular, in the interplay between radiation reaction effects and the spin
polarization of the radiating particles. For this we derive equations for
spin-polarized quantum radiation reaction from moments of the spin-polarized
kinetic equations. By comparing with the classical theory, we identify and
discuss the spin-dependent radiation reaction terms, and radiative
contributions to spin dynamics.
