Session S37: Colloids III
2:30 PM–5:18 PM, Wednesday, March 23, 2005
LACC Room: 512
Sponsoring Unit:
DFD
Chair: Noel Clark, University of Colorado
Abstract ID: BAPS.2005.MAR.S37.15
Abstract: S37.00014 : Relaxation in a glassy binary mixture: A comparison of a Brownian Dynamics simulation and the mode-coupling theory
5:06 PM–5:18 PM
Preview Abstract
MathJax On | Off 
Abstract
Authors:
Elijah Flenner
Grzegorz Szamel
(Dept. of Chemistry, Colorado State University)
We compare results of Brownian Dynamics simulations of a glassy binary mixture with predictions of the mode-coupling theory for the same mixture. The mode-coupling equations for the time evolution of the coherent and the incoherent scattering functions were solved for a number of temperatures using as input the structure factors determined from the simulations. As found in earlier studies, the mode-coupling theory predicts an ergodicity breaking transition at a temperature that is approximately twice higher than the \textit{crossover} temperature inferred from Brownian Dynamics simulation results. However, when compared at the same $T-T_c$, time-dependent quantities predicted by the mode-coupling theory agree reasonably well with those obtained from simulations except at the lowest temperatures.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2005.MAR.S37.15