Kinetic alfven waves in self-gravitating quantum dusty plasma with trapping effects

We have put a study of linear and nonlinear propagation of kinetic Alfven waves in dusty plasma. By making a use of the Sagdeev potential approach, we have examined the amplitude and period of the solitary density waves. The self-gravitating effect is involved in terms of Jeans term. In linear treatment the Jeans effect play a vital role by in low magnetized plasmas,the wave dispersion decreases, when Jeans affect increases. The wave dispersion increases, when the dust density increases. In the solitary density structures, the amplitude and period of the wave decreases by increasing the Mach number when the other parameters are fixed.