# Phase Separation Kinetics in a Model with Order-Parameter Dependent Mobility

Source: [Phase Separation Kinetics in a Model with Order-Parameter Dependent Mobility](<https://www.sota2.com/research/paper/68fa24682c2a3760193a3a31>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T09:08:56.559Z

Authors: Sanjay Puri, Alan Bray, Joel Lebowitz

Published: 1997-09-10T10:29:19.000Z

## Abstract

We present extensive results from 2-dimensional simulations of phase separation kinetics in a model with order-parameter dependent mobility. We find that the time-dependent structure factor exhibits dynamical scaling and the scaling function is numerically indistinguishable from that for the Cahn-Hilliard (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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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/cond-mat/9709113>)

[PDF](<https://arxiv.org/pdf/cond-mat/9709113.pdf>)