Abstract
We report on observations of cusp-like sharply peaked dust acoustic solitons in a one-dimensional fluid simulation of a dusty plasma system. These nonlinear singular structures, dithering at the wave breaking point, are found to be long-lived entities that emerge spontaneously from a variety of large-amplitude initial perturbations. Such excitations can play a significant role in wave breaking and wave-particle dynamics in dusty plasmas and may explain some recent experimental observations.
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