Das Subir K, Fisher Michael E, Sengers Jan V, Horbach Jürgen, Binder Kurt
Institute for Physical Science and Technology, University of Maryland, College Park, 20742, USA.
Phys Rev Lett. 2006 Jul 14;97(2):025702. doi: 10.1103/PhysRevLett.97.025702. Epub 2006 Jul 11.
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 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.
我们报告了对称二元 Lennard-Jones 混合物在其临界溶解点附近临界动力学的全面模拟。自扩散系数未显示出可检测到的异常。剪切粘度和互扩散系数的数据与重整化群理论和模式耦合理论预测的渐近幂律及振幅完全一致，前提是适当考虑了有限尺寸效应以及相关昂萨格系数的背景贡献。这解决了近期分子模拟引发的一场争议。
