Wang-Landau algorithm for continuous models and joint density of states

被引：126
作者：
Zhou, CG
Schulthess, TC
Torbrügge, S
Landau, DP
机构：
[1] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci & Comp Sci, Oak Ridge, TN 37831 USA
[2] Oak Ridge Natl Lab, Div Math, Oak Ridge, TN 37831 USA
[3] Univ Georgia, Ctr Simulat Phys, Athens, GA 30602 USA
[4] Univ Osnabruck, Fachbereich Phys, D-49076 Osnabruck, Germany
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 12期
关键词：
D O I：
10.1103/PhysRevLett.96.120201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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页数：4
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