Wave spectra of 2D dusty plasma solids and liquids

Abstract

Brownian dynamics simulations were carried out to study wave spectra of two-dimensional dusty plasma liquids and solids for a wide range of wavelengths. The existence of a longitudinal dust thermal mode was confirmed in simulations, and a cutoff wavenumber in the transverse mode was measured. Dispersion relations, resulting from simulations, were compared with those from analytical theories, such as the random-phase approximation (RPA), quasi-localized charged approximation (QLCA), and harmonic approximation (HA). An overall good agreement between the QLCA and simulations was found for wide ranges of states and wavelengths after taking into account the direct thermal effect in the QLCA, while for the RPA and HA good agreement with simulations were found in the high and low temperature limits, respectively.

arXiv comment26 pages, 9 figures

References in corpus (2)

• Dynamical correlations and collective excitations of Yukawa liquids
• Self-Diffusion in 2D Dusty Plasma Liquids: Numerical Simulation Results

Cited by in corpus (18)

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• Fingerprints of different interaction mechanisms on the collective modes in complex (dusty) plasmas
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• Dispersion and damping of two-dimensional dust acoustic waves: Theory and Simulation
• Quasi-localized charge approximation approach for the nonlinear structures in strongly coupled Yukawa systems
• Strongly coupled Yukawa trilayer liquid: Structure and dynamics