Are the hydrodynamic forces and torques zero during the electrophoresis of multiparticle systems with thin debye layers?

A commonly used result in electrophoresis is that a swarm of insulating particles of any shape and size, in any configuration, with the same slip condition (i.e. with the same zeta potential and infinitesimally thin Debye layers), moves with the same electrophoretic velocity as a single isolated particle. The objective of this paper is to prove this general result and review its implications.