Wang-Landau algorithm for continuous models and joint density of states.
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.
Zhou
Chenggang
C
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.
Schulthess
T C
TC
Torbrügge
Stefan
S
Landau
D P
DP