Critical slowing down in random anisotropy magnets

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dc.creatorDudka, M.
dc.creatorFolk, R.
dc.creatorHolovatch, Yu.
dc.creatorMoser, G.
dc.date2005-07-11
dc.date.accessioned2026-07-07T06:25:05Z
dc.date.available2026-07-07T06:25:05Z
dc.descriptionWe study the purely relaxational critical dynamics with non-conserved order parameter (model A critical dynamics) for three-dimensional magnets with disorder in a form of the random anisotropy axis. For the random axis anisotropic distribution, the static asymptotic critical behaviour coincides with that of random site Ising systems. Therefore the asymptotic critical dynamics is governed by the dynamical exponent of the random Ising model. However, the disorder influences considerably the dynamical behaviour in the non-asymptotic regime. We perform a field-theoretical renormalization group analysis within the minimal subtraction scheme in two-loop approximation to investigate asymptotic and effective critical dynamics of random anisotropy systems. The results demonstrate the non-monotonic behaviour of the dynamical effective critical exponent $z_{\rm eff}$.
dc.description11 pages, 4 figures, style file included
dc.identifierhttps://arxiv.org/abs/cond-mat/0507241
dc.identifierhttp://arxiv.org/abs/cond-mat/0507241
dc.identifierCondens. Matter Phys. 8 (2005) 737-748
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96751
dc.subjectDisordered Systems and Neural Networks
dc.titleCritical slowing down in random anisotropy magnets
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