paper

A Cluster Monte Carlo Algorithm for 2-Dimensional Spin Glasses

arXiv:cond-mat/0101116 · doi:10.1007/PL00011151

Abstract

A new Monte Carlo algorithm for 2-dimensional spin glasses is presented. The use of clusters makes possible global updates and leads to a gain in speed of several orders of magnitude. As an example, we study the 2-dimensional +/-J Edwards-Anderson model. The new algorithm allows us to equilibrate systems of size 100^2 down to temperature T = 0.1. Our main result is that the correlation length diverges as an exponential and not as a power law as T -> Tc = 0.

6 pages, 9 figures, section 2 completly rewritten

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