Strong Dynamical Heterogeneities in the Violation of the Fluctuation-Dissipation Theorem in Spin Glasses
arXiv:cond-mat/0608603 · doi:10.1103/PhysRevLett.98.097203
Abstract
We analyze numerically the violation of the fluctuation-dissipation theorem (FDT) in the Edwards-Anderson (EA) spin glass model. Using single spin probability densities we reveal the presence of strong dynamical heterogeneities, which correlate with ground state information. The physical interpretation of the results shows that the spins in the EA model can be divided in two sets. In 3D, one set forms a compact structure which presents a coarsening-like behavior with its characteristic violation of the FDT, while the other asymptotically follows the FDT. Finally, we compare the dynamical behavior observed in 3D with 2D.
Accepted for publication in Phys. Rev. Lett. 2007
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- Dynamical heterogeneities as fingerprints of a backbone structure in Potts models
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- Effects from Additional Random Configuration to Linear Response and Modified Fluctuation-Dissipation Relation
- Changing the universality class of the three-dimensional Edwards-Anderson spin-glass model by selective bond dilution