Trajectory-guided configuration interaction simulations of multidimensional quantum dynamics.

Trajectory-guided configuration interaction simulations of multidimensional quantum dynamics.
复制标题

多维量子动力学的轨迹引导构型相互作用模拟。

DOI:
10.1063/1.3681167
复制
发表时间:
2012
期刊:
The Journal of chemical physics
影响因子:
--
通讯作者:
S. Habershon
S. Habershon
中科院分区:
--
文献类型:
--
作者:
S. Habershon

文献摘要

参考文献

被引文献

相似文献

我们提出了一种方法来模拟多维量子系统,使用直接动力学轨迹来引导波函数传播。首先,轨迹模拟被用来生成一个样本的动态相关的配置上的势能面(PES)。第二,采样的配置被用来构建一个n-模式表示的PES使用贪婪算法。最后,时间相关的薛定谔方程求解使用配置相互作用展开的波函数,与个人的基函数直接从1-模式的贡献,n-模式PES。这种方法是成功地证明了应用程序的20维基准问题描述隧道耦合自由度的存在。
We propose an approach to modelling multidimensional quantum systems which uses direct-dynamics trajectories to guide wavefunction propagation. First, trajectory simulations are used to generate a sample of dynamically relevant configurations on the potential energy surface (PES). Second, the sampled configurations are used to construct an n-mode representation of the PES using a greedy algorithm. Finally, the time-dependent Schrödinger equation is solved using a configuration interaction expansion of the wavefunction, with individual basis functions derived directly from the 1-mode contributions to the n-mode PES. This approach is successfully demonstrated by application to a 20-dimensional benchmark problem describing tunnelling in the presence of coupled degrees of freedom.
DOI: 10.1080/00268970802172503
发表时间: 2008-08
期刊: Molecular Physics
影响因子: 1.7
作者:
G. Worth;M. Robb;B. Lasorne
通讯作者: G. Worth;M. Robb;B. Lasorne