Frequency-Dependence Correction to the Order-Parameter Decay Rates near the Critical Point of Fluids

Abstract

The correction to the order-parameter decay rates near the critical point of fluids arising from the frequency dependence of shear viscosity was calculated, and was found to be generally small ranging from 0.6% at $q\xi =0.1\mathrm{}$ to 6% at $q\xi =30\mathrm{}$, where $q$ and $\xi$ are the wave number and the range of correlations of order-parameter fluctuations, respectively.