On the critical dynamics of extended-impurity systems in cubic anisotropic crystals

Yoshitake Yamazaki, Yoshiichi Fukuda, Arno Holz and Moyuru Ochiai

Physica A: Statistical Mechanics and its Applications, 1986, vol. 136, issue 2, 303-315

Abstract: Critical dynamics is studied for N-component spin systems in cubic anisotropic crystals in the presence of extended impurities, namely εd-dimensionally connected impurities distributed randomly in d∼ (≡ d − εd) dimensions (d: dimensionality of the medium; d ≡ 4 - ε). As extended impurities make the systems coordinate-anisotropic, new results are expected in the critical dynamics. By means of a field-theoretic renormalization-group (RG) approach, critical regions and dynamic critical exponents are evaluated, to the lowest order in a double ε, εd expansion, for models corresponding to model A, model B and model C, proposed by Hohenberg and Halperin.

Date: 1986
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:136:y:1986:i:2:p:303-315

DOI: 10.1016/0378-4371(86)90255-4

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