Cluster Monte Carlo algorithms for diluted spin glasses

Abstract

Recently a cluster Monte Carlo algorithm has been used very successfully in the two-dimensional Edwards-Anderson (EA) model. We show that this algorithm and a variant thereof can also be used successfully in models with a non-zero spin glass transition temperature. The application of such algorithms to the site-diluted EA model in three dimensions is discussed and the efficiency of the two algorithms is compared among each other and to parallel tempering. Finally, we give evidence for a spin glass transition in the three-dimensional site-diluted EA model with Gaussian couplings at a site occupation of p = 62.5 %.

Proceedings of "Statistical Physics of Disordered Systems and Its Applications", Hayama (Japan), July 2004; 4 pages, 2 figures

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