A numerical approach to large deviations in continuous time

A numerical approach to large deviations in continuous time
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连续时间大偏差的数值方法

DOI:
10.1088/1742-5468/2007/03/p03004
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发表时间:
2006
期刊:
Journal of Statistical Mechanics: Theory and Experiment
影响因子:
--
通讯作者:
J. Tailleur
J. Tailleur
中科院分区:
--
文献类型:
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作者:
V. Lecomte;J. Tailleur

文献摘要

被引文献

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我们提出了一个算法来评估与历史相关的观测值的大偏差函数。而不是依赖于一个时间离散化过程来近似的动态,我们提供了一个直接的连续时间算法有价值的系统与多个时间尺度,从而扩展了Giardinà,Kurchan和Peliti的工作(2006年物理评论快报。96   120603)。该过程是补充与集成计划,提高其效率。我们还展示了如何使用该方法可以用来探测大偏差函数的系统中的动态相变揭示在我们的上下文中通过出现的非解析性的大偏差函数。
We present an algorithm to evaluate large deviation functions associated to history-dependent observables. Instead of relying on a time discretization procedure to approximate the dynamics, we provide a direct continuous-time algorithm valuable for systems with multiple timescales, thus extending the work of Giardinà, Kurchan and Peliti (2006 Phys. Rev. Lett. 96   120603). The procedure is supplemented with a thermodynamic-integration scheme which improves its efficiency. We also show how the method can be used to probe large deviation functions in systems with a dynamical phase transition—revealed in our context through the appearance of a non-analyticity in the large deviation functions.