On the Nature of the Gaussian Approximations in Phase Ordering Kinetics s

Preprint

9 September 1994

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9409040

Abstract

The structure of the gaussian auxiliary field approximation in the theory of phase ordering kinetics is analysed with the aim of placing the method within the context of a systematic theory. While we are unable to do this for systems with a scalar order parameter, where the approximation remains uncontrolled, a systematic development about the gaussian approximation can be outlined for systems with a vector order parameter in terms of a suitably defined $1/N$-expansion.

Keywords

PHASE ORDERING KINETICS
GAUSSIAN APPROXIMATION
ORDER PARAMETER
SYSTEMATIC
THEORY

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Version 1, 1994-09-09, ArXiv

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