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Wang-Landau multibondic cluster simulations for second-order phase transitions | | Bernd A Berg
; Wolfhard Janke
; | | Date: |
26 Jan 2007 | | Journal: | Phys Rev Lett, 98 (4), 040602 | | 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 or multicanonical approach by power laws in the lattice size. In our simulations real gains in CPU time reach 2 orders of magnitude. | | Source: | PubMed, pmid17358751 | | Services: | Forum | Review | Favorites | |
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