Abstract
The structure of the Gaussian auxiliary field approximation in the theory of phase-ordering kinetics is analyzed 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.
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More From: Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
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