Area-angular momentum-charge inequality for stable marginally outer   trapped surfaces in 4D Einstein-Maxwell-dilaton theory
  We derive inequalities between the area, the angular momentum and the charges for axisymmetric closed outermost stably marginally outer trapped surfaces, embedded in dynamical and, in general, non-axisymmetric spacetimes satisfying the Einstein-Maxwell-dilaton-matter equations. In proving the inequalities we assume that the dilaton potential is nonnegative and that the matter energy-momentum tensor satisfies the dominant energy condition. 
Stoytcho S. Yazadjiev
gr-qc hep-th