Condensed Matter Physics, 1996, No. 7, p. 27-52, English
DOI:10.5488/CMP.7.27
Title: TRANSPORT COEFFICIENTS IN PURE FLUIDS AND MIXTURES NEAR
A CRITICAL POINT: COMPARISON OF THE ONE LOOP ORDER RESULTS WITH EXPERIMENT
Authors: R.Folk (Institute for Theoretical Physics, University of Linz, Austria),
G.Moser (Institute for Physics and Biophysics, University of Salzburg, Austria)
We review
the nonasymptotic critical temperature dependence of the hydrodynamic
transport coefficients in pure fluids near the critical point and
in mixtures near the consolute point calculated in lowest nontrivial
order of renormalization group theory.
Two dynamical background parameters
of the theory (respectively three for the mixtures) are
fixed by fitting one of the transport coefficients (we take the shear
viscosity). The other transport coefficents are then predicted without
any adjustable parameter. Our analysis shows good agreement with the
asymptotic one loop value of the Kawasaki amplitude
R=1.056. Deviations of the transport coefficients in the asymptotic
region are due to the one loop approximation for the asymptotic
exponents.
Comments: Refs. 51, Figs. 6, Tabs. 3.