Glassy Properties of the Kawasaki Dynamics of Two-Dimensional Ferromagnets

Florent Krząkała
Phys. Rev. Lett. 94, 077204 – Published 24 February 2005

Abstract

We study numerically the Kawasaki dynamics of the 2D Ising model. At large time we recover the coarsening growth as lc(t)t1/3. At shorter time however, the system enters a metastable glassy regime that displays an extremely slow growth and nontrivial violations of the fluctuation-dissipation theorem similar to those observed in spin glasses: this is one of the simplest systems in which such violations occur. We also consider Potts models, where a similar behavior is observed, and the model of Shore and Sethna where the domain growth is also slow, but where violations of the fluctuation-dissipation theorem are trivial. We finally comment on these violations in the context of activated coarsening, and on similarities and differences with the glass transition phenomenology.

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  • Received 14 September 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.077204

©2005 American Physical Society

Authors & Affiliations

Florent Krząkała

  • Dipartimento di Fisica, INFM and SMC, Università di Roma “La Sapienza”, P. A. Moro 2, 00185 Roma, Italy
  • Laboratoire P.C.T., UMR CNRS 7083, ESPCI, 10 rue vauquelin, 75005 Paris, France

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Issue

Vol. 94, Iss. 7 — 25 February 2005

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