Model C critical dynamics of disordered magnets
Abstract
The critical dynamics of model C in the presence of disorder is considered. It is known that in the asymptotics a conserved secondary density decouples from the nonconserved order parameter for disordered systems. However couplings between order parameter and secondary density cause considerable effects on non-asymptotic critical properties. Here, a general procedure for a renormalization group treatment is proposed. Already the one-loop approximation gives a qualitatively correct picture of the diluted model C dynamical criticality. A more quantitative description is achieved using two-loop approximation. In order to get reliable results resummation technique has to be applied.
Cite
@article{arxiv.cond-mat/0601262,
title = {Model C critical dynamics of disordered magnets},
author = {M. Dudka and R. Folk and Yu. Holovatch and G. Moser},
journal= {arXiv preprint arXiv:cond-mat/0601262},
year = {2009}
}
Comments
21 page, 4 figures, submitted to the proceedings of the conference "Renormalization Group 2005", Helsinki, Finland, 30 August - 3 September 2005