Glassy properties of the Kawasaki dynamics of two-dimensional ferromagnets

Details Glassy properties of the Kawasaki dynamics of two-dimensional ferromagnets Glassy properties of the Kawasaki dynamics of two-dimensional ferromagnets

2004-09-14

arxiv.org/abs/cond-mat/0409348v4

Phys. Rev. Lett. 94, 077204 (2005)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.94.077204

We study numerically the Kawasaki dynamics of the 2d Ising model. At large time we recover the coarsening growth as l(t) ~ t^(1/3). At shorter time however, the system enters a metastable glassy regime that displays an extremely slow growth and non-trivial violations of the fluctuation dissipation theorem similar to those observed in spin glasses: this is one of the simplest system where such violations occur. We also consider Potts models, where a similar behavior is observed, and the modelof 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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