Time correlation functions and transport coefficients of two-dimensional Yukawa liquids

Abstract

The existence of coefficients for diffusion, viscosity and thermal conductivity is examined for two-dimensional (2D) liquids. Equilibrium molecular dynamics simulations are performed using a Yukawa potential, and the long-time behavior of autocorrelation functions is tested. Advances reported here as compared to previous 2D Yukawa liquid simulations include an assessment of the thermal conductivity, using a larger system size to allow meaningful examination of longer times, and development of improved analysis methods. We find that the transport coefficient exists for diffusion at high temperature, and viscosity at low temperature, but not in the opposite limits. The thermal conductivity coefficient does not appear to exist at high temperature. Further advances in computing power could improve these assessments by allowing even larger system sizes and longer time series.

References in corpus (7)

• Shear Flows and Shear Viscosity in a Two-Dimensional Yukawa System (Dusty Plasma)
• Shear viscosity of two-dimensional Yukawa systems in liquid state
• Shear viscosity and shear thinning in two-dimensional Yukawa liquids
• Test of the Stokes-Einstein relation in a two-dimensional Yukawa liquid
• Transport Coefficients of the Yukawa One Component Plasma
• Superdiffusion in quasi-two-dimensional Yukawa liquids
• Long Time Tail of the Velocity Autocorrelation Function in a Two-Dimensional Moderately Dense Hard Disk Fluid

Cited by in corpus (24)

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• Static and dynamic shear viscosity of a single layer complex plasma
• Superdiffusion of 2D Yukawa liquids due to a perpendicular magnetic field
• Dynamics of two-dimensional complex plasmas in a magnetic field
• Identifying anomalous diffusion and melting in dusty plasmas
• The Effect of Correlations on the Heat Transport in a Magnetized Plasma
• Testing thermal conductivity models with equilibrium molecular dynamics simulations of the one component plasma
• Brownian Dynamics of charged particles in a constant magnetic field
• Effect of magnetic field on the velocity autocorrelation and the caging of particles in two-dimensional Yukawa liquids
• Energy Transport in a Shear Flow of Particles in a 2D Dusty Plasma
• Longitudinal viscosity of 2D Yukawa liquids
• Higher harmonics of the magnetoplasmon in strongly coupled Coulomb and Yukawa systems
• Multi-particle collision simulations of 2D one-component plasmas: anomalous transport and dimensional crossovers
• Viscosity calculated in simulations of strongly-coupled dusty plasmas with gas friction
• Fickian yet non-Gaussian diffusion in two-dimensional Yukawa liquids
• Phonon spectra of a two-dimensional solid dusty plasma modified by two-dimensional periodic substrates
• Oscillation-like diffusion of two-dimensional liquid dusty plasmas on one-dimensional periodic substrates with varied widths
• Thermal conduction in two-dimensional complex plasma layers
• Vibrational model of heat transfer in strongly coupled Yukawa fluids (dusty plasma liquids)
• Shear Viscosity in Two-Dimensional Dipole Systems
• Dispersion and damping of two-dimensional dust acoustic waves: Theory and Simulation