Some Remarks on Preconditioning Molecular Dynamics

Some Remarks on Preconditioning Molecular Dynamics
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DOI:
10.5802/smai-jcm.29
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发表时间:
2016-12
期刊:
arXiv: Probability
影响因子:
--
通讯作者:
Houssam Alrachid;Letif Mones;C. Ortner
Houssam Alrachid;Letif Mones;C. Ortner
中科院分区:
其他
文献类型:
--
作者:
Houssam Alrachid;Letif Mones;C. Ortner

文献摘要

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我们考虑一个预处理过阻尼Langevin算法,不改变不变分布,并询问预处理是否提高了标准模型的渐近方差减少和加速收敛到平衡。我们提出了一个详细的研究,在一些基本的玩具模型与分子模拟的渐近方差预处理的依赖。我们的理论结果得到了数值模拟的支持。
We consider a Preconditioned Overdamped Langevin algorithm that does not alter the invariant distribution and ask whether preconditioning improves the standard model in terms of reducing the asymptotic variance and of accelerating convergence to equilibrium. We present a detailed study of the dependence of the asymptotic variance on preconditioning in some elementary toy models related to molecular simulation. Our theoretical results are supported by numerical simulations.