Replica symmetry breaking for anisotropic magnets with quenched disorder

E. Kogan, M. Kaveh

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We study critical behaviour of a magnet with cubic anisotropy and quenched scalar disorder which is taken into account by replica method. We derive to first order in ϵ approximation the renormalization group equations taking into account possible replica symmetry breaking. We study the stability of the replica symmetric fixed points with respect to perturbations without (in general case) replica symmetry. However, we find that if a fixed point is stable with respect to replica symmetric deviations, it is also stable with respect to deviations without replica symmetry.

Original languageEnglish
Article number025002
JournalJournal of Physics A: Mathematical and Theoretical
Issue number2
StatePublished - 13 Jan 2017

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© 2016 IOP Publishing Ltd.


  • phase transitions
  • quenched disorder
  • replicas


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