How to regularize a symplectic-energy-momentum integrator

How to regularize a symplectic-energy-momentum integrator
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如何正则化辛能量动量积分器

DOI:
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发表时间:
2005
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通讯作者:
Y. Shibberu
Y. Shibberu
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文献类型:
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作者:
Y. Shibberu

文献摘要

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我们确定鬼轨迹的辛能量动量(SEM)集成,并表明鬼轨迹是不可逆的时间。我们解释了如何SEM集成可以正则化,在SEM保存的方式,使它是时间可逆的。我们描述了一种算法,用于实现正则化SEM积分。给出了摆的仿真结果。简要讨论了正则化SEM积分器的坐标不变性。
We identify ghost trajectories of symplectic-energy-momentum (SEM) integration and show that the ghost trajectories are not time reversible. We explain how SEM integration can be regularized, in a SEM preserving manner, so that it is time reversible. We describe an algorithm for implementing the regularized SEM integrator. Simulation results for the pendulum are given. Coordinate invariance of the regularized SEM integrator is briefly discussed.