Critical Dynamics in a Binary Fluid: Simulations and Finite-size Scaling

Details Critical Dynamics in a Binary Fluid: Simulations and Finite-size Scaling Critical Dynamics in a Binary Fluid: Simulations and Finite-size Scaling

2006-04-04

arxiv.org/abs/cond-mat/0604102v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.97.025702

We report comprehensive simulations of the critical dynamics of a symmetric binary Lennard-Jones mixture near its consolute point. The self-diffusion coefficient exhibits no detectable anomaly. The data for the shear viscosity and the mutual-diffusion coefficient are fully consistent with the asymptotic power laws and amplitudes predicted by renormalization-group and mode-coupling theories {\it provided} finite-size effects and the background contribution to the relevant Onsager coefficient are suitably accounted for. This resolves a controversy raised by recent molecular simulations.

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