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Model C critical dynamics of disordered magnets | | M. Dudka
; R. Folk
; Yu. Holovatch
; G. Moser
; | | Date: |
12 Jan 2006 | | Subject: | Disordered Systems and Neural Networks | | 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. | | Source: | arXiv, cond-mat/0601262 | | Services: | Forum | Review | PDF | Favorites | |
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