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Название: Stress-Stress Correlation Functions in Lattice Gases Beyond Boltzmann's Approximation
Авторы: Velzen G.A., Brito R., Ernst M.H.
Аннотация:
Journal of Statistical Physics, Vol. 70, Nos. 3/'4, 1993, p. 811-832.
The complete time dependence of the stress-stress correlation functions in lattice gas cellular automata is calculated from the ring kinetic theory using numerical and analytical methods. This provides corrections, typically of 10-20%, to the usual molecular chaos calculations, where correlation functions decay exponentially. The resulting correlation function crosses over from an initial exponential decay to the long-time behavior calculated from mode coupling theory. The present theory, applied to the viscosity, accounts for a substantial part of the observed difference between the Boltzmann theory and simulations.