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Symplectic Integrators to Stochastic Hamiltonian Dynamical Systems Derived from Composition Methods

机译:合成方法的随机哈密顿动力系统的辛积分

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摘要

"Symplectic" schemes for stochastic Hamiltonian dynamical systems are formulated through "composition methods (or operator splitting methods)" proposed by Misawa (2001). In the proposed methods, a symplectic map, which is given by the solution of a stochastic Hamiltonian system, is approximated by composition of the stochastic flows derived from simpler Hamiltonian vector fields. The global error orders of the numerical schemes derived from the stochastic composition methods are provided. To examine the superiority of the new schemes, some illustrative numerical simulations on the basis of the proposed schemes are carried out for a stochastic harmonic oscillator system.
机译:通过Misawa(2001)提出的“合成方法(或算子拆分方法)”来制定随机哈密顿动力系统的“渐进式”方案。在所提出的方法中,由随机汉密尔顿系统的解给出的辛映射是通过由更简单的汉密尔顿矢量场导出的随机流的组合来近似的。提供了从随机合成方法导出的数值方案的全局误差阶。为了检验新方案的优越性,在所提出的方案的基础上对随机谐波振荡器系统进行了一些说明性的数值模拟。

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  • 来源
    《Mathematical Problems in Engineering》 |2010年第2期|p.31.1-31.12|共12页
  • 作者

    Tetsuya Misawa;

  • 作者单位

    Faculty of Economics, Nagoya City University, Nagoya 467-8501, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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