Wang-Landau/Multibondic Cluster Simulations for Second-Order Phase Transitions
Abstract
For a second-order phase transition the critical energy range of interest is larger than the energy range covered by a canonical Monte Carlo simulation at the critical temperature. Such an extended energy range can be covered by performing a Wang-Landau recursion for the spectral density followed by a multicanonical simulation with fixed weights. But in the conventional approach one loses the advantage due to cluster algorithms. A cluster version of the Wang-Landau recursion together with a subsequent multibondic simulation improves for 2D and 3D Ising models the efficiency of the conventional Wang-Landau/multicanonical approach by power laws in the lattice size. In our simulations real gains in CPU time reach two orders of magnitude.
Cite
@article{arxiv.cond-mat/0610647,
title = {Wang-Landau/Multibondic Cluster Simulations for Second-Order Phase Transitions},
author = {Bernd A. Berg and Wolfhard Janke},
journal= {arXiv preprint arXiv:cond-mat/0610647},
year = {2008}
}
Comments
4 pages, 3 figures, RevTex style, updated version, to appear in Phys. Rev. Lett. (in print)