 97497 S. Puri, A. J. Bray and J. L.Lebowitz
 Phase Separation Kinetics in a Model with OrderParameter Dependent
Mobility
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Sep 16, 97

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Abstract. We present extensive results from 2dimensional simulations of phase
separation kinetics in a model with orderparameter dependent
mobility. We find that the timedependent structure factor exhibits
dynamical scaling and the scaling function is numerically
indistinguishable from that for the CahnHilliard (CH) equation, even
in the limit where surface diffusion is the mechanism for domain
growth. This supports the view that the scaling form of the structure
factor is "universal" and leads us to question the conventional wisdom
that an accurate representation of the scaled structure factor for the
CH equation can only be obtained from a theory which correctly models
bulk diffusion.
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