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Collective excitations of rotating dusty plasma are analyzed under the quasilocalized charge approximation (QLCA) framework for strongly coupled systems byexplicitly accounting for the dust rotation in the analysis. Considering thefirm analogy of magnetoplasmons with "rotoplasmons" established by the recentrotating dusty plasma experiments, the relaxation introduced by the rotation intheir strong coupling and 2-dimensional (often introduced by gravitationalsedimentation) characteristics is emphasized in their dispersion. Finiterotation version of both strong and weak coupling dispersions is derived andanalyzed, showing correspondence between a `faster rotating but weakly coupled'branch and its strongly coupled counterpart, relevant to both magnetized andunmagnetized dust experiments, in gravity or microgravity conditions. The firstcorrespondence between their measurements in rotating plasmas and the QLCAproduced dispersions in a rotating frame, with an independent numericalvalidation, is presented in detail.

Collective excitations of rotating dusty plasma under quasi-localized charge approximation of strongly coupled systems