  A quantum kinetic theory for correlated charged-particle systems in strong
time-dependent electromagnetic fields is developed. Our approach is based on a
systematic gauge-invariant nonequilibrium Green's functions formulation.
Extending our previous analysis (Kremp et al., Phys. Rev. E vol. 60, p. 4725
(1999) we concentrate on the selfconsistent treatment of dynamical screening
and electromagnetic fields which is applicable to arbitrary nonequilibrium
situations. The resulting kinetic equation generalizes previous results to
quantum plasmas with full dynamical screening and includes many-body effects.
It is, in particular, applicable to the interaction of dense plasmas with
strong electromagnetic fields, including laser fields and x-rays. Furthermore,
results for the modification of the plasma screening and the longitudinal field
fluctuations due to the electromagnetic field are presented.
