Перегляд за автором "Dudka, M."

Сортувати за: Порядок: Результатів:

  • Analysis of the 3d massive renormalization group perturbative expansions: a delicate case 
    Delamotte, B.; Dudka, M.; Holovatch, Yu.; Mouhanna, D. (Condensed Matter Physics, 2010)
    The effectiveness of the perturbative renormalization group approach at fixed space dimension d in the theory of critical phenomena is analyzed. Three models are considered: the O(N) model, the cubic model and the ...
  • Critical slowing down in random anisotropy magnets 
    Dudka, M.; Folk, R.; Holovatch, Yu.; Moser, G. (Condensed Matter Physics, 2005)
    We 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 ...
  • Emergent universal critical behavior of the 2D N-color Ashkin-Teller model in the presence of correlated disorder 
    Dudka, M.; Fedorenko, A.A. (Condensed Matter Physics, 2017)
    We study the critical behavior of the 2D N-color Ashkin-Teller model in the presence of random bond disorder whose correlations decays with the distance r as a power-law r −a . We consider the case when the spins ...
  • Gauge dependence of the critical dynamics at the superconducting phase transition 
    Dudka, M.; Folk, R.; Moser, G. (Condensed Matter Physics, 2007)
    The critical dynamics of superconductors in the charged regime is reconsidered within field-theory. For the dynamics, the Ginzburg-Landau model with complex order parameter coupled to the gauge field suggested earlier ...
  • Marginal dimensions for multicritical phase transitions 
    Dudka, M.; Folk, R.; Holovatch, Yu.; Moser, G. (Condensed Matter Physics, 2012)
    The field-theoretical model describing multicritical phenomena with two coupled order parameters with n || and n⊥ components and of O(n||) ⊕ O(n⊥) symmetry is considered. Conditions for realization of different types of ...
  • On the critical behaviour of random anisotropy magnets 
    Dudka, M.; Folk, R.; Holovatch, Yu. (Condensed Matter Physics, 2001)
    The effect of a local anisotropy of random orientation on a ferromagnetic phase transition is studied. To this end, a model of a random anisotropy magnet is analysed by means of a field theoretical renormalization ...
  • On the critical behaviour of random anisotropy magnets: cubic anisotropy 
    Dudka, M.; Folk, R.; Holovatch, Yu. (Condensed Matter Physics, 2001)
    The critical behaviour of an m -vector model with a local anisotropy axis of random orientation is studied within the field-theoretical renormalization group approach for cubic distribution of anisotropy axis. Expressions ...