Dispersion and damping of two-dimensional dust acoustic waves: Theory and Simulation
Plasma Physics
2015-05-19 v1
Abstract
A two-dimensional generalized hydrodynamics (GH) model is developed to study the full spectrum of both longitudinal and transverse dust acoustic waves (DAW) in strongly coupled complex (dusty) plasmas, with memory-function-formalism being implemented to enforce high-frequency sum rules. Results are compared with earlier theories (such as quasi-localized charge approximation and its extended version) and with a self-consistent Brownian dynamics simulation. It is found that the GH approach provides good account, not only for dispersion relations, but also for damping rates of the DAW modes in a wide range of coupling strengths, an issue hitherto not fully addressed for dusty plasmas.
Keywords
Cite
@article{arxiv.1006.1799,
title = {Dispersion and damping of two-dimensional dust acoustic waves: Theory and Simulation},
author = {Nitin Upadhyaya and Z. L. Miskovic and L. -J. Hou},
journal= {arXiv preprint arXiv:1006.1799},
year = {2015}
}
Comments
28 pages, 13 figures