Abstract
The effects of dust polarization force and charge gradient have been investigated on low frequency strongly coupled dust acoustic modes. We have taken the massive dust particulates as polarized and degenerate electrons and distribution of ions are assumed as Maxwellian. The general dispersion relation has been obtained by employing the normal mode method and generalized hydrodynamic model. The obtained general dispersion relation is further studied for a characteristic timescale which gives two different frequency regimes hydrodynamic and kinetic regimes. The numerical results have been presented by plotting the graphs between frequency and wave number which show the effect of different parameters on dust acoustic modes.
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