Persistence and Memory in Patchwork Dynamics for Glassy Models
arXiv:0708.0683 · doi:10.1103/PhysRevB.77.092415
Abstract
Slow dynamics in disordered materials prohibits direct simulation of their rich nonequilibrium behavior at large scales. "Patchwork dynamics" is introduced to mimic relaxation over a very broad range of time scales by equilibrating or optimizing directly on successive length scales. This dynamics is used to study coarsening and to replicate memory effects for spin glasses and random ferromagnets. It is also used to find, with high confidence, exact ground states in large or toroidal samples.
4 pages, 4 figures; reference correction
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- Domain-wall excitations in the two-dimensional Ising spin glass
- The ground state energy of the Edwards-Anderson spin glass model with a parallel tempering Monte Carlo algorithm
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