Decoupled-Mode Theory of Critical Viscosity and Diffusion in the Binary-Liquid Phase Transition
- 1 December 1972
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 6 (6) , 2358-2369
- https://doi.org/10.1103/physreva.6.2358
Abstract
The fluctuation-dissipation formula for the viscosity in terms of the stress-tensor fluctuations reproduces the experimental logarithmic temperature dependence of the hydrodynamic viscosity. Using the theoretical wave-number- and frequency-dependent viscosity in the problem of critical diffusion, we find that the effects of nonlocality and retardation practically cancel, resulting in satisfactory agreement with a recent light scattering determination of the effective viscosity.Keywords
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