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Mode-coupling theory of the stress-tensor autocorrelation function of a dense binary fluid mixture | | Supurna Sinha
; M. Cristina Marchetti
; | | Date: |
12 Sep 2005 | | Journal: | Physical Review A, {f 46}, 4942 (1992) | | Subject: | Soft Condensed Matter | cond-mat.soft | | Abstract: | We present a generalized mode-coupling theory for a dense binary fluid mixture. The theory is used to calculate molecular-scale renormalizations to the stress-tensor autocorrelation function (STAF) and to the long-wavelength zero-frequency shear viscosity. As in the case of a dense simple fluid, we find that the STAF appears to decay as $t^{-3/2}$ over an intermediate range of time. The coefficient of this long-time tail is more than two orders of magnitude larger than that obtained from conventional mode-coupling theory. Our study focuses on the effect of compositional disorder on the decay of the STAF in a dense mixture. | | Source: | arXiv, cond-mat/0509282 | | Other source: | [GID 765746] pmid9908714 | | Services: | Forum | Review | PDF | Favorites | |
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