A hierarchy of evolution equations for higher-order moments of the velocity distribution function is generalized by including the effects of an external field. The use of continued-fraction techniques yields generalized transport coefficients including not only memory effects but also non-linear effects leading to a saturation in the corresponding flux. The ensuing corrections to the Einstein transport relation far from equilibrium are also studied.
|Journal||Physica A: Statistical Mechanics and its Applications|
|Publication status||Published - 15 Jun 1997|