Chaotic, memory, and cooling rate effects in spin glasses: Evaluation of the Edwards-Anderson model

Marco Picco, Federico Ricci-Tersenghi, Felix Ritort
2001 Physical Review B (Condensed Matter)  
We investigate chaotic, memory and cooling rate effects in the three dimensional Edwards-Anderson model by doing thermoremanent (TRM) and AC susceptibility numerical experiments and making a detailed comparison with laboratory experiments on spin glasses. In contrast to the experiments, the Edwards-Anderson model does not show any trace of re-initialization processes in temperature change experiments (TRM or AC). A detailed comparison with AC relaxation experiments in the presence of DC
more » ... field or coupling distribution perturbations reveals that the absence of chaotic effects in the Edwards-Anderson model is a consequence of the presence of strong cooling rate effects. We discuss possible solutions to this discrepancy, in particular the smallness of the time scales reached in numerical experiments, but we also question the validity of the Edwards-Anderson model to reproduce the experimental results.
doi:10.1103/physrevb.63.174412 fatcat:vtrkhewhzjeirmmdgfh2khllfi