Is the mean-field approximation so bad? A simple generalization yelding realistic critical indices for 3D Ising-class systems
Statistical Mechanics
2009-11-07 v1
Abstract
Modification of the renormalization-group approach, invoking Stratonovich transformation at each step, is proposed to describe phase transitions in 3D Ising-class systems. The proposed method is closely related to the mean-field approximation. The low-order scheme works well for a wide thermal range, is consistent with a scaling hypothesis and predicts very reasonable values of critical indices.
Keywords
Cite
@article{arxiv.cond-mat/0201147,
title = {Is the mean-field approximation so bad? A simple generalization yelding realistic critical indices for 3D Ising-class systems},
author = {A. N. Rubtsov},
journal= {arXiv preprint arXiv:cond-mat/0201147},
year = {2009}
}
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4 pages