Leticia López-Flores, Laura L. Yeomans-Reyna, Magdaleno Medina-Noyola
Using the generalized Langevin equation formalism and the process of contraction of the description we derive a general memory function equation for the thermal fluctuations of the local density of a simple atomic liquid. From the analysis of the long-time limit of this equation, a striking equivalence is suggested between the long-time dynamics of the atomic liquid and the dynamics of the corresponding \emph{Brownian} liquid.
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http://arxiv.org/abs/1203.3892
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