Scaling and Crossover in the Large-N Model for Growth Kinetics

Details Scaling and Crossover in the Large-N Model for Growth Kinetics Scaling and Crossover in the Large-N Model for Growth Kinetics

1994-05-03

arxiv.org/abs/cond-mat/9405003v1

Physics

Condensed Matter

48 pages with 6 figures available upon request, plain LaTex

Scientific paper

10.1103/PhysRevE.50.1046

The dependence of the scaling properties of the structure factor on space dimensionality, range of interaction, initial and final conditions, presence or absence of a conservation law is analysed in the framework of the large-N model for growth kinetics. The variety of asymptotic behaviours is quite rich, including standard scaling, multiscaling and a mixture of the two. The different scaling properties obtained as the parameters are varied are controlled by a structure of fixed points with their domains of attraction. Crossovers arising from the competition between distinct fixed points are explicitely obtained. Temperature fluctuations below the critical temperature are not found to be irrelevant when the order parameter is conserved. The model is solved by integration of the equation of motion for the structure factor and by a renormalization group approach.

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