The memory kernel of velocity autocorrelation function on a NiZr-liquid: theory and simulation

Details The memory kernel of velocity autocorrelation function on a NiZr-liquid: theory and simulation The memory kernel of velocity autocorrelation function on a NiZr-liquid: theory and simulation

2005-05-19

arxiv.org/abs/cond-mat/0505462v1

Physics

Condensed Matter

Statistical Mechanics

6 pages, 4 figures

Scientific paper

Based on Sj\"{o}gren und Sjolander's Mode-Coupling(MC)-Model, we have reformulated and calculated the memory kernel (MK) of the velocity autocorrelation function (VACF)on a Ni$_{0.2}$Zr$_{0.8}$-liquid. Reformulating means here that we have constructed the memory kernel of VACF for our binary system, instead of one for one atomic system of the Sj\"{o}gren und Sjolander's model. The data required for the theoretical calculations have been obtained from molecular dynamics (MD) simulations. The theoretical results then are compared with those directly obtained from computer simulation. We found, although it exists a qualitative agreement between theoretical predictions and simulation results, that quantitatively there is an deviations between both results, especially for Zr-subsystem.

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