### 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.

Original language | English (US) |
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Pages (from-to) | 4942-4953 |

Number of pages | 12 |

Journal | Physical Review A |

Volume | 46 |

Issue number | 8 |

DOIs | |

State | Published - 1992 |

### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics

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## Cite this

Sinha, S., & Marchetti, M. C. (1992). Mode-coupling theory of the stress-tensor autocorrelation function of a dense binary fluid mixture.

*Physical Review A*,*46*(8), 4942-4953. https://doi.org/10.1103/PhysRevA.46.4942