Cluster Algorithm Renormalization Group Method

Details Cluster Algorithm Renormalization Group Method Cluster Algorithm Renormalization Group Method

2009-11-30

arxiv.org/abs/0911.5670v1

PoS LATTICE2008:043, 2008

Physics

Condensed Matter

Statistical Mechanics

7 pages, 6 figures, Presented at the 26th International Symposium on Lattice Field Theory (Lattice 2008), Williamsburg, Virgin

Scientific paper

We present a self consistent method based on cluster algorithms and Renormalization Group on the lattice to study critical systems numerically. We illustrate it by means of the 2D Ising model. We compute the critical exponents $\nu$ and $\eta$ and the renormalization group flow of the probability density function of the magnetization. The results, compared to the standard Monte Carlo Renormalization Group proposed by Swendsen [1], are very accurate and the method works faster by a factor which grows monotonically with the lattice size. This allows to simulate larger lattices in reachable computational times.

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