title: Influence of a polarization force on dust acoustic waves.
abstract: The effect of the polarization force acting on the grains in a nonuniform plasma background on the propagation of low-frequency waves in complex (dusty) plasmas is analyzed. It is shown that polarization interaction leads to a renormalization (decrease) of the dust acoustic phase velocity. The effect becomes more pronounced as the grain size increases. Finally, there is a critical grain size above which the dust acoustic waves cannot propagate, but aperiodic (nonpropagating) perturbations form instead.
authors: Max-Planck-Institut für extraterrestrische Physik, D-85741 Garching, Germany.
authors: S A
authors: SA
authors: Khrapak
authors: A V
authors: AV
authors: Ivlev
authors: V V
authors: VV
authors: Yaroshenko
authors: G E
authors: GE
authors: Morfill