Is diffusion anomalous in two-dimensional Yukawa liquids?

Abstract

There have recently been many predictions of "superdiffusion" in two-dimensional strongly coupled Yukawa systems, both by computer simulations and in dusty plasma experiments, with substantially varying diffusion exponents. Here we show that the results crucially depend on the strength of dissipation and the time instant of the measurement. For sufficiently large friction even subdiffusion is possible. However, there are strong indications that, in the long-time limit, anomalous diffusion vanishes for dissipative as well as for frictionless systems.

References in corpus (6)

• Superdiffusion and non-Gaussian statistics in a driven-dissipative 2D dusty plasma
• Dynamical correlations and collective excitations of Yukawa liquids
• Time correlation functions and transport coefficients of two-dimensional Yukawa liquids
• Self-Diffusion in 2D Dusty Plasma Liquids: Numerical Simulation Results
• Superdiffusion in quasi-two-dimensional Yukawa liquids
• Comment on: "Self-Diffusion in 2D Dusty-Plasma Liquids: Numerical-Simulation Results" [arXiv:0812.0338]

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• Vibrational model of heat transfer in strongly coupled Yukawa fluids (dusty plasma liquids)
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• Thermal conduction in two-dimensional complex plasma layers
• Self-Consistent Relaxation Theory of Collective Ion Dynamics in Yukawa One-Component Plasmas under Intermediate Screening Regimes
• Anomalous Transport in Velocity Space, from Fokker-Planck to General Equation
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• Weak decaying collective-excitation approximation for Yukawa one-component plasmas
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