title: Wang-Landau algorithm for continuous models and joint density of states.
abstract: We present a modified Wang-Landau algorithm for models with continuous degrees of freedom. We demonstrate this algorithm with the calculation of the joint density of states of ferromagnet Heisenberg models and a model polymer chain. The joint density of states contains more information than the density of states of a single variable-energy, but is also much more time consuming to calculate. We present strategies to significantly speed up this calculation for large systems over a large range of energy and order parameter.
authors.affiliation: Center for Nanophase Materials Sciences and Computer Science and Mathematics Division, Oak Ridge National Laboratory, Post Office Box 2008, MS6493, Oak Ridge Tennessee, 37831-6493 USA.
authors.forename: Chenggang
authors.initials: C
authors.lastname: Zhou
authors.forename: T C
authors.initials: TC
authors.lastname: Schulthess
authors.forename: Stefan
authors.initials: S
authors.lastname: Torbrügge
authors.forename: D P
authors.initials: DP
authors.lastname: Landau