期刊
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
卷 388, 期 14, 页码 2821-2838出版社
ELSEVIER
DOI: 10.1016/j.physa.2009.03.036
关键词
Spin glass and other random models; Numerical simulation studies
资金
- Fondecyt (Chile) [1060317, 7080020]
- Millennium Scientific Initiative (Chile) [P06-022F]
- Universidad Nacional de San Luis
- CONICET (Argentina) [322000, PIP6294]
We study the efficiency of parallel tempering Monte Carlo technique for calculating true ground states of the Edwards-Anderson spin glass model. Bimodal and Gaussian bond distributions were considered in two- and three-dimensional lattices. By a systematic analysis we find a simple formula to estimate the values of the parameters needed in the algorithm to find the GS with a fixed average probability. We also study the performance of the algorithm for single samples, quantifying the difference between samples where the GS is hard, or easy, to find. The GS energies we obtain are in good agreement with the values found in the literature. Our results show that the performance of the parallel tempering technique is comparable to more powerful heuristics developed to find the ground state of Ising spin glass systems. (C) 2009 Elsevier B.V. All rights reserved.
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